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Materials Data on K4Na4Mo3W5O24 by Materials Project

K4Na4W5Mo3O24 is (Cubic) Perovskite-derived structured and crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. K1+ is bonded to twelve O2- atoms to form KO12 cuboctahedra that share corners with four equivalent KO12 cuboctahedra, corners with eight equivalent NaO12 cuboctahedra, faces with two equivalent NaO12 cuboctahedra, faces with four equivalent KO12 cuboctahedra, faces with three MoO6 octahedra, and faces with five WO6 octahedra. There are a spread of K–O bond distances ranging from 2.78–2.91 Å. Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with four equivalent NaO12 cuboctahedra, corners with eight equivalent KO12 cuboctahedra, faces with two equivalent KO12 cuboctahedra, faces with four equivalent NaO12 cuboctahedra, faces with three MoO6 octahedra, and faces with five WO6 octahedra. There are a spread of Na–O bond distances ranging from 2.73–2.90 Å. There are five inequivalent W+4.40+ sites. In the first W+4.40+ site, W+4.40+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.95–2.07 Å. In the second W+4.40+ site, W+4.40+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.93–1.99 Å. In the third W+4.40+ site, W+4.40+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent WO6 octahedra, corners with four MoO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of W–O bond distances ranging from 1.90–2.04 Å. In the fourth W+4.40+ site, W+4.40+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.93–1.98 Å. In the fifth W+4.40+ site, W+4.40+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.90–2.09 Å. There are three inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Mo–O bond distances ranging from 2.00–2.14 Å. In the second Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Mo–O bond distances ranging from 1.98–2.10 Å. In the third Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent WO6 octahedra, corners with four MoO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Mo–O bond distances ranging from 2.00–2.09 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+, two equivalent Na1+, and two W+4.40+ atoms. In the second O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.40+ atoms to form distorted OK2Na2W2 octahedra that share corners with twelve OK4MoW octahedra, edges with two equivalent OK2Na2Mo2 octahedra, and faces with four OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the third O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, one W+4.40+, and one Mo6+ atom to form distorted OK2Na2MoW octahedra that share corners with fourteen OK4W2 octahedra, edges with two equivalent OK2Na2Mo2 octahedra, and faces with three OK4MoW octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the fourth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two Mo6+ atoms to form distorted OK2Na2Mo2 octahedra that share corners with six OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with five OK4MoW octahedra. The corner-sharing octahedra tilt angles range from 2–62°. In the fifth O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+, two equivalent Na1+, and two W+4.40+ atoms. In the sixth O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+, two equivalent Na1+, one W+4.40+, and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a distorted linear geometry to two equivalent K1+, two equivalent Na1+, one W+4.40+, and one Mo6+ atom. In the eighth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, one W+4.40+, and one Mo6+ atom to form a mixture of distorted corner and face-sharing OK2Na2MoW octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the ninth O2- site, O2- is bonded to four equivalent K1+ and two W+4.40+ atoms to form distorted OK4W2 octahedra that share corners with sixteen OK4Mo2 octahedra, edges with four OK4MoW octahedra, and faces with two equivalent OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the tenth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.40+ atoms. In the eleventh O2- site, O2- is bonded to four equivalent K1+, one W+4.40+, and one Mo6+ atom to form distorted OK4MoW octahedra that share corners with twelve OK4W2 octahedra, edges with four OK4W2 octahedra, and faces with four OK2Na2MoW octahedra. The corner-sharing octahedra tilt angles range from 5–60°. In the twelfth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+, one W+4.40+, and one Mo6+ atom. In the thirteenth O2- site, O2- is bonded to four equivalent K1+ and two W+4.40+ atoms to form distorted OK4W2 octahedra that share corners with twelve OK4MoW octahedra, edges with four OK4W2 octahedra, and faces with four OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 5–60°. In the fourteenth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.40+ atoms. In the fifteenth O2- site, O2- is bonded to four equivalent K1+ and two Mo6+ atoms to form distorted OK4Mo2 octahedra that share corners with ten OK4W2 octahedra, edges with four OK4MoW octahedra, and faces with six OK2Na2MoW octahedra. The corner-sharing octahedra tilt angles range from 0–58°. In the sixteenth O2- site, O2- is bonded to four equivalent Na1+ and two Mo6+ atoms to form distorted ONa4Mo2 octahedra that share corners with six OK4Mo2 octahedra and faces with six OK2Na2MoW octahedra. The corner-sharing octahedra tilt angles range from 0–57°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W5I16 by Materials Project

W5I16 crystallizes in the orthorhombic Pna2_1 space group. The structure is one-dimensional and consists of two W5I16 ribbons oriented in the (1, 1, 0) direction. there are five inequivalent W+3.20+ sites. In the first W+3.20+ site, W+3.20+ is bonded to five I1- atoms to form edge-sharing WI5 square pyramids. There are a spread of W–I bond distances ranging from 2.81–2.91 Å. In the second W+3.20+ site, W+3.20+ is bonded to five I1- atoms to form edge-sharing WI5 square pyramids. There are a spread of W–I bond distances ranging from 2.75–2.82 Å. In the third W+3.20+ site, W+3.20+ is bonded to five I1- atoms to form edge-sharing WI5 square pyramids. There are two shorter (2.77 Å) and three longer (2.84 Å) W–I bond lengths. In the fourth W+3.20+ site, W+3.20+ is bonded to five I1- atoms to form edge-sharing WI5 square pyramids. There are a spread of W–I bond distances ranging from 2.76–2.86 Å. In the fifth W+3.20+ site, W+3.20+ is bonded to five I1- atoms to form edge-sharing WI5 square pyramids. There are a spread of W–I bond distances ranging from 2.76–2.84 Å. There are sixteen inequivalent I1- sites. In the first I1- site, I1- is bonded in a 9-coordinate geometry to three W+3.20+ atoms. In the second I1- site, I1- is bonded in a 5-coordinate geometry to three W+3.20+ atoms. In the third I1- site, I1- is bonded in a 8-coordinate geometry to three W+3.20+ atoms. In the fourth I1- site, I1- is bonded in a 4-coordinate geometry to three W+3.20+ atoms. In the fifth I1- site, I1- is bonded in a 12-coordinate geometry to two W+3.20+ atoms. In the sixth I1- site, I1- is bonded in a 12-coordinate geometry to two W+3.20+ atoms. In the seventh I1- site, I1- is bonded in a 10-coordinate geometry to two W+3.20+ atoms. In the eighth I1- site, I1- is bonded in a 12-coordinate geometry to two W+3.20+ atoms. In the ninth I1- site, I1- is bonded in a 1-coordinate geometry to one W+3.20+ and one I1- atom. The I–I bond length is 2.96 Å. In the tenth I1- site, I1- is bonded in a single-bond geometry to one W+3.20+ atom. In the eleventh I1- site, I1- is bonded in a distorted single-bond geometry to one W+3.20+ and one I1- atom. The I–I bond length is 3.31 Å. In the twelfth I1- site, I1- is bonded in a 1-coordinate geometry to one W+3.20+ and one I1- atom. The I–I bond length is 2.96 Å. In the thirteenth I1- site, I1- is bonded in a single-bond geometry to one W+3.20+ atom. In the fourteenth I1- site, I1- is bonded in a 2-coordinate geometry to two I1- atoms. In the fifteenth I1- site, I1- is bonded in a distorted linear geometry to two I1- atoms. The I–I bond length is 2.82 Å. In the sixteenth I1- site, I1- is bonded in a 1-coordinate geometry to one I1- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W6CCl16 by Materials Project

W6CCl16 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two W6CCl16 sheets oriented in the (0, 0, 1) direction. there are four inequivalent W+3.33+ sites. In the first W+3.33+ site, W+3.33+ is bonded to one C4- and five Cl1- atoms to form a mixture of corner, edge, and face-sharing WCCl5 octahedra. The corner-sharing octahedra tilt angles range from 37–42°. The W–C bond length is 2.15 Å. There are a spread of W–Cl bond distances ranging from 2.40–2.61 Å. In the second W+3.33+ site, W+3.33+ is bonded to one C4- and five Cl1- atoms to form a mixture of corner, edge, and face-sharing WCCl5 octahedra. The corner-sharing octahedra tilt angles range from 37–42°. The W–C bond length is 2.15 Å. There are a spread of W–Cl bond distances ranging from 2.40–2.64 Å. In the third W+3.33+ site, W+3.33+ is bonded to one C4- and five Cl1- atoms to form a mixture of corner, edge, and face-sharing WCCl5 octahedra. The corner-sharing octahedral tilt angles are 42°. The W–C bond length is 2.20 Å. There are a spread of W–Cl bond distances ranging from 2.40–2.46 Å. In the fourth W+3.33+ site, W+3.33+ is bonded to one C4- and five Cl1- atoms to form a mixture of corner, edge, and face-sharing WCCl5 octahedra. The corner-sharing octahedral tilt angles are 42°. The W–C bond length is 2.20 Å. There are a spread of W–Cl bond distances ranging from 2.41–2.47 Å. C4- is bonded in a distorted pentagonal pyramidal geometry to six W+3.33+ atoms. There are ten inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the second Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two equivalent W+3.33+ atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one W+3.33+ atom. In the fourth Cl1- site, Cl1- is bonded in a bent 150 degrees geometry to two W+3.33+ atoms. In the fifth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the sixth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the seventh Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two equivalent W+3.33+ atoms. In the eighth Cl1- site, Cl1- is bonded in a single-bond geometry to one W+3.33+ atom. In the ninth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the tenth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K4Na4MoW7O24 by Materials Project

K4Na4W7MoO24 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. K1+ is bonded to twelve O2- atoms to form KO12 cuboctahedra that share corners with four equivalent KO12 cuboctahedra, corners with eight equivalent NaO12 cuboctahedra, faces with two equivalent NaO12 cuboctahedra, faces with four equivalent KO12 cuboctahedra, a faceface with one MoO6 octahedra, and faces with seven WO6 octahedra. There are a spread of K–O bond distances ranging from 2.82–2.88 Å. Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with four equivalent NaO12 cuboctahedra, corners with eight equivalent KO12 cuboctahedra, faces with two equivalent KO12 cuboctahedra, faces with four equivalent NaO12 cuboctahedra, a faceface with one MoO6 octahedra, and faces with seven WO6 octahedra. There are a spread of Na–O bond distances ranging from 2.79–2.87 Å. There are five inequivalent W+4.86+ sites. In the first W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 2.05–2.11 Å. In the second W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.91–2.06 Å. In the third W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.97–2.05 Å. In the fourth W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.92–1.99 Å. In the fifth W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four equivalent WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.92–2.04 Å. Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are one shorter (2.06 Å) and five longer (2.10 Å) Mo–O bond lengths. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent K1+ and two W+4.86+ atoms to form distorted OK4W2 octahedra that share corners with twenty OK2Na2W2 octahedra, edges with four equivalent OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the second O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.86+ atoms. In the third O2- site, O2- is bonded to four equivalent K1+ and two W+4.86+ atoms to form distorted OK4W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.86+ atoms. In the fifth O2- site, O2- is bonded to four equivalent K1+, one W+4.86+, and one Mo6+ atom to form distorted OK4MoW octahedra that share corners with twenty-two OK4W2 octahedra, edges with four equivalent OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the sixth O2- site, O2- is bonded to four equivalent Na1+, one W+4.86+, and one Mo6+ atom to form a mixture of distorted face and corner-sharing ONa4MoW octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the seventh O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with six OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the eighth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with six OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the ninth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with eighteen OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with seven OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the tenth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, one W+4.86+, and one Mo6+ atom to form distorted OK2Na2MoW octahedra that share corners with eighteen OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with seven OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U6Al43W4 by Materials Project

U6W4Al43 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent U sites. In the first U site, U is bonded in a 8-coordinate geometry to one U, one W, and fifteen Al atoms. The U–U bond length is 3.16 Å. The U–W bond length is 3.62 Å. There are a spread of U–Al bond distances ranging from 3.04–3.47 Å. In the second U site, U is bonded in a 8-coordinate geometry to one U, one W, and fifteen Al atoms. The U–U bond length is 3.17 Å. The U–W bond length is 3.61 Å. There are a spread of U–Al bond distances ranging from 3.05–3.48 Å. There are three inequivalent W sites. In the first W site, W is bonded in a distorted q6 geometry to two equivalent U and ten Al atoms. There are a spread of W–Al bond distances ranging from 2.58–2.72 Å. In the second W site, W is bonded in a distorted q6 geometry to two equivalent U and ten Al atoms. There are a spread of W–Al bond distances ranging from 2.58–2.72 Å. In the third W site, W is bonded in a cuboctahedral geometry to twelve Al atoms. There are a spread of W–Al bond distances ranging from 2.67–2.87 Å. There are fifteen inequivalent Al sites. In the first Al site, Al is bonded to three U and nine Al atoms to form a mixture of corner and face-sharing AlU3Al9 cuboctahedra. There are a spread of Al–Al bond distances ranging from 2.69–2.82 Å. In the second Al site, Al is bonded in a distorted single-bond geometry to two equivalent U, one W, and two equivalent Al atoms. In the third Al site, Al is bonded in a distorted single-bond geometry to two equivalent U, one W, and two equivalent Al atoms. In the fourth Al site, Al is bonded in a distorted single-bond geometry to two equivalent U, one W, and two equivalent Al atoms. In the fifth Al site, Al is bonded in a distorted linear geometry to two equivalent W atoms. In the sixth Al site, Al is bonded in a distorted linear geometry to two W atoms. In the seventh Al site, Al is bonded in a 2-coordinate geometry to one U, two W, and three Al atoms. There are one shorter (2.70 Å) and two longer (2.86 Å) Al–Al bond lengths. In the eighth Al site, Al is bonded in a 2-coordinate geometry to one U, two W, and three Al atoms. There are a spread of Al–Al bond distances ranging from 2.73–2.88 Å. In the ninth Al site, Al is bonded in a 12-coordinate geometry to four equivalent U and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.73–3.04 Å. In the tenth Al site, Al is bonded in a 12-coordinate geometry to four U and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.71–3.04 Å. In the eleventh Al site, Al is bonded in a 1-coordinate geometry to two equivalent U, one W, and three Al atoms. The Al–Al bond length is 2.87 Å. In the twelfth Al site, Al is bonded in a 1-coordinate geometry to two U, one W, and three Al atoms. The Al–Al bond length is 2.87 Å. In the thirteenth Al site, Al is bonded in a 1-coordinate geometry to two U, one W, and three Al atoms. The Al–Al bond length is 2.86 Å. In the fourteenth Al site, Al is bonded in a 1-coordinate geometry to two equivalent U, one W, and nine Al atoms. Both Al–Al bond lengths are 3.00 Å. In the fifteenth Al site, Al is bonded in a 1-coordinate geometry to two equivalent U, one W, and nine Al atoms. The Al–Al bond length is 3.01 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr51W12N56O3 by Materials Project

Sr51W12N56O3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are twenty-six inequivalent Sr sites. In the first Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.64–3.18 Å. In the second Sr site, Sr is bonded to four N and one O atom to form distorted SrN4O square pyramids that share a cornercorner with one SrN5O octahedra, a cornercorner with one SrN4O square pyramid, corners with four WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, and an edgeedge with one SrN5O octahedra. The corner-sharing octahedral tilt angles are 2°. There are a spread of Sr–N bond distances ranging from 2.62–2.88 Å. The Sr–O bond length is 2.60 Å. In the third Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.67–3.07 Å. In the fourth Sr site, Sr is bonded in a 4-coordinate geometry to four N and one O atom. There are a spread of Sr–N bond distances ranging from 2.45–3.28 Å. The Sr–O bond length is 2.46 Å. In the fifth Sr site, Sr is bonded to six N atoms to form SrN6 octahedra that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, a cornercorner with one WN4 tetrahedra, edges with five SrN6 octahedra, edges with two WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–23°. There are a spread of Sr–N bond distances ranging from 2.61–2.85 Å. In the sixth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one WN4 tetrahedra, edges with four SrN6 octahedra, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–23°. There are a spread of Sr–N bond distances ranging from 2.55–2.98 Å. In the seventh Sr site, Sr is bonded to five N atoms to form distorted SrN5 trigonal bipyramids that share corners with three SrN4O square pyramids, corners with three WN4 tetrahedra, an edgeedge with one SrN5 square pyramid, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. There are a spread of Sr–N bond distances ranging from 2.51–2.74 Å. In the eighth Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.54–3.07 Å. In the ninth Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.55–3.20 Å. In the tenth Sr site, Sr is bonded to five N atoms to form distorted SrN5 trigonal bipyramids that share a cornercorner with one SrN6 octahedra, corners with two SrN4O square pyramids, corners with three WN4 tetrahedra, edges with four SrN6 octahedra, and an edgeedge with one SrN5 square pyramid. The corner-sharing octahedral tilt angles are 16°. There are a spread of Sr–N bond distances ranging from 2.51–2.85 Å. In the eleventh Sr site, Sr is bonded in a 7-coordinate geometry to six N and one O atom. There are a spread of Sr–N bond distances ranging from 2.66–2.85 Å. The Sr–O bond length is 3.05 Å. In the twelfth Sr site, Sr is bonded to five N and one O atom to form SrN5O octahedra that share corners with two SrN4O square pyramids, corners with two WN4 tetrahedra, edges with three SrN6 octahedra, edges with three SrN4O square pyramids, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. There are a spread of Sr–N bond distances ranging from 2.60–2.87 Å. The Sr–O bond length is 2.60 Å. In the thirteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.43–3.02 Å. In the fourteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.51–2.87 Å. In the fifteenth Sr site, Sr is bonded to five N and one O atom to form distorted SrN5O octahedra that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, a cornercorner with one WN4 tetrahedra, edges with four SrN6 octahedra, an edgeedge with one SrN4O square pyramid, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–11°. There are a spread of Sr–N bond distances ranging from 2.57–2.85 Å. The Sr–O bond length is 2.66 Å. In the sixteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.57–3.00 Å. In the seventeenth Sr site, Sr is bonded to five N atoms to form distorted SrN5 square pyramids that share corners with two SrN6 octahedra, corners with four WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with two SrN6 octahedra, an edgeedge with one SrN5 square pyramid, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–15°. There are a spread of Sr–N bond distances ranging from 2.44–3.13 Å. In the eighteenth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share a cornercorner with one SrN5O octahedra, corners with three WN4 tetrahedra, edges with five SrN6 octahedra, edges with two SrN5 square pyramids, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 11°. There are a spread of Sr–N bond distances ranging from 2.48–3.01 Å. In the nineteenth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with four SrN6 octahedra, an edgeedge with one SrN5 square pyramid, edges with two equivalent WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–51°. There are a spread of Sr–N bond distances ranging from 2.53–2.99 Å. In the twentieth Sr site, Sr is bonded to five N atoms to form distorted SrN5 square pyramids that share a cornercorner with one SrN6 octahedra, corners with two WN4 tetrahedra, corners with two SrN5 trigonal bipyramids, edges with two SrN5O octahedra, an edgeedge with one SrN5 square pyramid, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 8°. There are a spread of Sr–N bond distances ranging from 2.50–2.92 Å. In the twenty-first Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.49–3.21 Å. In the twenty-second Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.50–3.27 Å. In the twenty-third Sr site, Sr is bonded in a 5-coordinate geometry to three N and two O atoms. There are a spread of Sr–N bond distances ranging from 2.62–2.93 Å. There are one shorter (2.27 Å) and one longer (2.47 Å) Sr–O bond lengths. In the twenty-fourth Sr site, Sr is bonded to four N and one O atom to form SrN4O square pyramids that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, corners with three WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with two equivalent SrN5O octahedra, and an edgeedge with one SrN4O square pyramid. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Sr–N bond distances ranging from 2.57–2.83 Å. The Sr–O bond length is 2.73 Å. In the twenty-fifth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one SrN5 square pyramid, a cornercorner with one WN4 tetrahedra, edges with two SrN6 octahedra, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 14–62°. There are a spread of Sr–N bond distances ranging from 2.60–2.95 Å. In the twenty-sixth Sr site, Sr is bonded to six N atoms to form SrN6 octahedra that share corners with four SrN6 octahedra, corners with two equivalent SrN5 square pyramids, corners with four WN4 tetrahedra, and edges with two equivalent SrN6 octahedra. The corner-sharing octahedra tilt angles range from 51–62°. There are a spread of Sr–N bond distances ranging from 2.62–2.76 Å. There are six inequivalent W sites. In the first W site, W is bonded to four N atoms to form distorted WN4 tetrahedra that share a cornercorner with one SrN5O octahedra, corners with three SrN4O square pyramids, and a cornercorner with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 5°. There are a spread of W–N bond distances ranging from 1.88–1.98 Å. In the second W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with three SrN6 octahedra, a cornercorner with one SrN5 square pyramid, a cornercorner with one SrN5 trigonal bipyramid, and edges with four SrN6 octahedra. The corner-sharing octahedra tilt angles range from 11–67°. There are a spread of W–N bond distances ranging from 1.89–1.94 Å. In the third W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with five SrN6 octahedra and edges with four SrN5O octahedra. The corner-sharing octahedra tilt angles range from 8–84°. There are a spread of W–N bond distances ranging from 1.91–1.95 Å. In the fourth W site, W is bonded to four N atoms to form WN4 tetrahedra that share a cornercorner with one SrN6 octahedra, corners with four SrN4O square pyramids, corners with three SrN5 trigonal bipyramids, an edgeedge with one SrN5O octahedra, and an edgeedge with one SrN5 square pyramid. The corner-sharing octahedral tilt angles are 4°. There are a spread of W–N bond distances ranging from 1.91–1.95 Å. In the fifth W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with two SrN6 octahedra, corners with three SrN4O square pyramids, an edgeedge with one SrN6 octahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 9–81°. There are a spread of W–N bond distances ranging from 1.88–1.93 Å. In the sixth W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with two SrN4O square pyramids, a cornercorner with one SrN5 trigonal bipyramid, and edges with two SrN6 octahedra. There is two shorter (1.91 Å) and two longer (1.93 Å) W–N bond length. There are twenty-eight inequivalent N sites. In the first N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share corners with two NSr6 octahedra, a cornercorner with one NSr4W trigonal bipyramid, edges with six NSr6 octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 5–9°. In the second N site, N is bonded to four Sr and one W atom to form distorted NSr4W trigonal bipyramids that share corners with two NSr6 octahedra, edges with four NSr5W octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 10–21°. In the third N site, N is bonded in a 5-coordinate geometry to four Sr and one W atom. In the fourth N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share a cornercorner with one NSr5W octahedra, a cornercorner with one OSr6 octahedra, edges with nine NSr6 octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 11–15°. In the fifth N site, N is bonded in a 6-coordinate geometry to five Sr and one W atom. In the sixth N site, N is bonded to six Sr atoms to form a mixture of edge and corner-sharing NSr6 octahedra. The corner-sharing octahedra tilt angles range from 3–18°. In the seventh N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share corners with five NSr5W octahedra,

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na5(WO3)14 by Materials Project

Na5(WO3)14 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with ten NaO12 cuboctahedra and faces with eight WO6 octahedra. There are two shorter (2.72 Å) and ten longer (2.75 Å) Na–O bond lengths. In the second Na1+ site, Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with six equivalent NaO12 cuboctahedra and faces with eight WO6 octahedra. There are a spread of Na–O bond distances ranging from 2.72–2.75 Å. In the third Na1+ site, Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with seven NaO12 cuboctahedra and faces with eight WO6 octahedra. There are a spread of Na–O bond distances ranging from 2.72–2.76 Å. There are four inequivalent W+5.64+ sites. In the first W+5.64+ site, W+5.64+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and faces with three NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of W–O bond distances ranging from 1.93–1.96 Å. In the second W+5.64+ site, W+5.64+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and faces with four NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. All W–O bond lengths are 1.95 Å. In the third W+5.64+ site, W+5.64+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and faces with three equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of W–O bond distances ranging from 1.93–1.96 Å. In the fourth W+5.64+ site, W+5.64+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and faces with two NaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. All W–O bond lengths are 1.95 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent W+5.64+ atoms. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na1+ and two equivalent W+5.64+ atoms. In the third O2- site, O2- is bonded in a distorted square co-planar geometry to two equivalent Na1+ and two equivalent W+5.64+ atoms. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Na1+ and two W+5.64+ atoms. In the fifth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two W+5.64+ atoms. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Na1+ and two equivalent W+5.64+ atoms. In the seventh O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent W+5.64+ atoms. In the eighth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent W+5.64+ atoms. In the ninth O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two equivalent W+5.64+ atoms. In the tenth O2- site, O2- is bonded in a distorted square co-planar geometry to two equivalent Na1+ and two equivalent W+5.64+ atoms. In the eleventh O2- site, O2- is bonded in a distorted T-shaped geometry to one Na1+ and two W+5.64+ atoms. In the twelfth O2- site, O2- is bonded in a distorted square co-planar geometry to two equivalent Na1+ and two equivalent W+5.64+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb(WO3)4 by Materials Project

Rb(WO3)4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded to twelve O2- atoms to form RbO12 cuboctahedra that share edges with twelve WO6 octahedra and faces with two equivalent RbO12 cuboctahedra. There are eight shorter (3.35 Å) and four longer (3.36 Å) Rb–O bond lengths. In the second Rb1+ site, Rb1+ is bonded to twelve O2- atoms to form RbO12 cuboctahedra that share edges with twelve WO6 octahedra and a faceface with one RbO12 cuboctahedra. There are a spread of Rb–O bond distances ranging from 3.28–3.45 Å. There are four inequivalent W+5.75+ sites. In the first W+5.75+ site, W+5.75+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and edges with four RbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–31°. There are a spread of W–O bond distances ranging from 1.93–1.96 Å. In the second W+5.75+ site, W+5.75+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and edges with two equivalent RbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–29°. There are a spread of W–O bond distances ranging from 1.93–1.95 Å. In the third W+5.75+ site, W+5.75+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and edges with three RbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–31°. There are a spread of W–O bond distances ranging from 1.93–1.95 Å. In the fourth W+5.75+ site, W+5.75+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra and edges with three RbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–31°. There are a spread of W–O bond distances ranging from 1.93–1.97 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two Rb1+ and two W+5.75+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Rb1+ and two W+5.75+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Rb1+ and two W+5.75+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Rb1+ and two W+5.75+ atoms. In the fifth O2- site, O2- is bonded in a linear geometry to two W+5.75+ atoms. In the sixth O2- site, O2- is bonded in a linear geometry to two W+5.75+ atoms. In the seventh O2- site, O2- is bonded in a linear geometry to two equivalent W+5.75+ atoms. In the eighth O2- site, O2- is bonded in a linear geometry to two equivalent W+5.75+ atoms. In the ninth O2- site, O2- is bonded in a linear geometry to two equivalent W+5.75+ atoms. In the tenth O2- site, O2- is bonded in a linear geometry to two equivalent W+5.75+ atoms. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Rb1+ and two W+5.75+ atoms. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two Rb1+ and two W+5.75+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li6V3W3O16 by Materials Project

Li6V3W3O16 is Hausmannite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.13–2.59 Å. In the second Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four WO6 octahedra and corners with five VO6 octahedra. The corner-sharing octahedra tilt angles range from 54–63°. There are a spread of Li–O bond distances ranging from 2.03–2.13 Å. In the third Li1+ site, Li1+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.82–1.97 Å. In the fourth Li1+ site, Li1+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.82–1.97 Å. In the fifth Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.10–2.59 Å. In the sixth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four VO6 octahedra and corners with five WO6 octahedra. The corner-sharing octahedra tilt angles range from 51–62°. There are a spread of Li–O bond distances ranging from 2.01–2.10 Å. There are three inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to six O2- atoms to form VO6 octahedra that share corners with three LiO4 tetrahedra and edges with four WO6 octahedra. There are a spread of V–O bond distances ranging from 2.03–2.13 Å. In the second V5+ site, V5+ is bonded to six O2- atoms to form VO6 octahedra that share corners with three LiO4 tetrahedra, edges with two equivalent VO6 octahedra, and edges with two equivalent WO6 octahedra. There are a spread of V–O bond distances ranging from 1.84–2.09 Å. In the third V5+ site, V5+ is bonded to six O2- atoms to form VO6 octahedra that share corners with three LiO4 tetrahedra, edges with two equivalent VO6 octahedra, and edges with two equivalent WO6 octahedra. There are a spread of V–O bond distances ranging from 2.03–2.15 Å. There are three inequivalent W+3.67+ sites. In the first W+3.67+ site, W+3.67+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three LiO4 tetrahedra, edges with two equivalent VO6 octahedra, and edges with two equivalent WO6 octahedra. There are a spread of W–O bond distances ranging from 1.93–2.07 Å. In the second W+3.67+ site, W+3.67+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three LiO4 tetrahedra, edges with two equivalent VO6 octahedra, and edges with two equivalent WO6 octahedra. There are a spread of W–O bond distances ranging from 1.92–2.08 Å. In the third W+3.67+ site, W+3.67+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three LiO4 tetrahedra and edges with four VO6 octahedra. There are a spread of W–O bond distances ranging from 1.92–2.00 Å. There are sixteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to two Li1+, one V5+, and one W+3.67+ atom. In the second O2- site, O2- is bonded to two Li1+ and two W+3.67+ atoms to form distorted OLi2W2 tetrahedra that share corners with two OLi2VW tetrahedra, a cornercorner with one OLi2V2 trigonal pyramid, and edges with two OLi2VW tetrahedra. In the third O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one V5+, and two W+3.67+ atoms. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one V5+, and two W+3.67+ atoms. In the fifth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, two V5+, and one W+3.67+ atom. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one V5+, and one W+3.67+ atom. In the seventh O2- site, O2- is bonded to two Li1+, one V5+, and one W+3.67+ atom to form distorted OLi2VW tetrahedra that share corners with two OLi2W2 tetrahedra, a cornercorner with one OLi2V2 trigonal pyramid, and edges with two OLi2VW tetrahedra. In the eighth O2- site, O2- is bonded to two Li1+, one V5+, and one W+3.67+ atom to form distorted OLi2VW tetrahedra that share corners with two OLi2W2 tetrahedra, a cornercorner with one OLi2V2 trigonal pyramid, and edges with two OLi2VW tetrahedra. In the ninth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+ and two W+3.67+ atoms. In the tenth O2- site, O2- is bonded to two Li1+ and two V5+ atoms to form distorted corner-sharing OLi2V2 trigonal pyramids. In the eleventh O2- site, O2- is bonded to two Li1+, one V5+, and one W+3.67+ atom to form distorted OLi2VW tetrahedra that share a cornercorner with one OLi2VW tetrahedra, a cornercorner with one OLi2V2 trigonal pyramid, and an edgeedge with one OLi2VW tetrahedra. In the twelfth O2- site, O2- is bonded to two Li1+, one V5+, and one W+3.67+ atom to form distorted OLi2VW tetrahedra that share a cornercorner with one OLi2VW tetrahedra, a cornercorner with one OLi2V2 trigonal pyramid, and an edgeedge with one OLi2VW tetrahedra. In the thirteenth O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, two V5+, and one W+3.67+ atom. In the fourteenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one V5+, and one W+3.67+ atom. In the fifteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+ and two V5+ atoms. In the sixteenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one V5+, and one W+3.67+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co6W20C7 by Materials Project

C7Co6W20 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. there are five inequivalent W sites. In the first W site, W is bonded in a 3-coordinate geometry to three Co and three C atoms. There are two shorter (2.79 Å) and one longer (2.84 Å) W–Co bond lengths. There are two shorter (2.17 Å) and one longer (2.26 Å) W–C bond lengths. In the second W site, W is bonded in a 2-coordinate geometry to three Co and two equivalent C atoms. There are two shorter (2.75 Å) and one longer (2.80 Å) W–Co bond lengths. Both W–C bond lengths are 2.14 Å. In the third W site, W is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co and two equivalent C atoms. Both W–Co bond lengths are 2.62 Å. Both W–C bond lengths are 2.08 Å. In the fourth W site, W is bonded in a distorted rectangular see-saw-like geometry to two equivalent Co and two equivalent C atoms. Both W–Co bond lengths are 2.63 Å. Both W–C bond lengths are 2.09 Å. In the fifth W site, W is bonded in a 6-coordinate geometry to six Co atoms. There are three shorter (2.48 Å) and three longer (2.49 Å) W–Co bond lengths. There are two inequivalent Co sites. In the first Co site, Co is bonded to ten W and two equivalent Co atoms to form distorted CoCo2W10 cuboctahedra that share corners with two equivalent CoCo2W10 cuboctahedra, corners with four equivalent CW6 octahedra, faces with two equivalent CoCo2W10 cuboctahedra, and faces with four equivalent CW6 octahedra. The corner-sharing octahedral tilt angles are 39°. Both Co–Co bond lengths are 2.63 Å. In the second Co site, Co is bonded in a 12-coordinate geometry to ten W and two equivalent Co atoms. Both Co–Co bond lengths are 2.62 Å. There are two inequivalent C sites. In the first C site, C is bonded in a 6-coordinate geometry to six equivalent W atoms. In the second C site, C is bonded to six W atoms to form CW6 octahedra that share corners with two equivalent CoCo2W10 cuboctahedra, corners with six equivalent CW6 octahedra, and faces with two equivalent CoCo2W10 cuboctahedra. The corner-sharing octahedra tilt angles range from 38–50°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na3W3Cl13 by Materials Project

Na3W3Cl13 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two Na3W3Cl13 sheets oriented in the (0, 1, 0) direction. there are three inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded in a distorted body-centered cubic geometry to eight Cl1- atoms. There are a spread of Na–Cl bond distances ranging from 2.96–3.05 Å. In the second Na1+ site, Na1+ is bonded to six Cl1- atoms to form distorted NaCl6 pentagonal pyramids that share corners with three equivalent NaCl6 pentagonal pyramids and edges with three WCl6 octahedra. There are a spread of Na–Cl bond distances ranging from 2.84–2.98 Å. In the third Na1+ site, Na1+ is bonded to six Cl1- atoms to form distorted NaCl6 pentagonal pyramids that share corners with three equivalent NaCl6 pentagonal pyramids and edges with three WCl6 octahedra. There are a spread of Na–Cl bond distances ranging from 2.82–2.97 Å. There are three inequivalent W+3.33+ sites. In the first W+3.33+ site, W+3.33+ is bonded to six Cl1- atoms to form WCl6 octahedra that share edges with two WCl6 octahedra and edges with two NaCl6 pentagonal pyramids. There are a spread of W–Cl bond distances ranging from 2.40–2.50 Å. In the second W+3.33+ site, W+3.33+ is bonded to six Cl1- atoms to form WCl6 octahedra that share edges with two WCl6 octahedra and edges with two NaCl6 pentagonal pyramids. There are a spread of W–Cl bond distances ranging from 2.40–2.49 Å. In the third W+3.33+ site, W+3.33+ is bonded to six Cl1- atoms to form WCl6 octahedra that share edges with two WCl6 octahedra and edges with two NaCl6 pentagonal pyramids. There are a spread of W–Cl bond distances ranging from 2.39–2.51 Å. There are thirteen inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to two Na1+ and one W+3.33+ atom. In the second Cl1- site, Cl1- is bonded in a distorted T-shaped geometry to two Na1+ and one W+3.33+ atom. In the third Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to two Na1+ and one W+3.33+ atom. In the fourth Cl1- site, Cl1- is bonded to three Na1+ and one W+3.33+ atom to form a mixture of distorted corner and edge-sharing ClNa3W tetrahedra. In the fifth Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to two Na1+ and one W+3.33+ atom. In the sixth Cl1- site, Cl1- is bonded in a distorted T-shaped geometry to two Na1+ and one W+3.33+ atom. In the seventh Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three W+3.33+ atoms. In the eighth Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to two Na1+ and one W+3.33+ atom. In the ninth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the tenth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the eleventh Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two W+3.33+ atoms. In the twelfth Cl1- site, Cl1- is bonded in a distorted T-shaped geometry to two Na1+ and one W+3.33+ atom. In the thirteenth Cl1- site, Cl1- is bonded to three Na1+ and one W+3.33+ atom to form a mixture of distorted corner and edge-sharing ClNa3W tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2W9O13 by Materials Project

Ca2W9O13 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Ca2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ca–O bond distances ranging from 2.28–2.42 Å. There are five inequivalent W+2.44+ sites. In the first W+2.44+ site, W+2.44+ is bonded in a square co-planar geometry to four equivalent O2- atoms. There are two shorter (2.13 Å) and two longer (2.15 Å) W–O bond lengths. In the second W+2.44+ site, W+2.44+ is bonded in a T-shaped geometry to three O2- atoms. There are a spread of W–O bond distances ranging from 2.08–2.25 Å. In the third W+2.44+ site, W+2.44+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are two shorter (2.06 Å) and one longer (2.18 Å) W–O bond lengths. In the fourth W+2.44+ site, W+2.44+ is bonded to six O2- atoms to form WO6 octahedra that share a cornercorner with one WO6 octahedra, a cornercorner with one WO5 trigonal bipyramid, and edges with two equivalent WO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of W–O bond distances ranging from 2.14–2.48 Å. In the fifth W+2.44+ site, W+2.44+ is bonded to five O2- atoms to form WO5 trigonal bipyramids that share a cornercorner with one WO6 octahedra and corners with two equivalent WO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 50°. There are a spread of W–O bond distances ranging from 2.08–2.16 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a square co-planar geometry to four W+2.44+ atoms. In the second O2- site, O2- is bonded to two equivalent Ca2+ and two W+2.44+ atoms to form distorted OCa2W2 tetrahedra that share corners with seven OCa2W2 tetrahedra and edges with two equivalent OCaW3 trigonal pyramids. In the third O2- site, O2- is bonded to one Ca2+ and three W+2.44+ atoms to form a mixture of distorted corner and edge-sharing OCaW3 trigonal pyramids. In the fourth O2- site, O2- is bonded to one Ca2+ and three W+2.44+ atoms to form OCaW3 tetrahedra that share corners with six OCa2W2 tetrahedra, corners with two equivalent OCaW3 trigonal pyramids, and edges with two equivalent OCaW3 trigonal pyramids. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+ and two equivalent W+2.44+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three W+2.44+ atoms. In the seventh O2- site, O2- is bonded to four W+2.44+ atoms to form distorted OW4 tetrahedra that share corners with five OCa2W2 tetrahedra and an edgeedge with one OW4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W9O13 by Materials Project

W9O13 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent W+2.89+ sites. In the first W+2.89+ site, W+2.89+ is bonded to six O2- atoms to form WO6 octahedra that share corners with four equivalent WO5 square pyramids and edges with two equivalent WO6 octahedra. There are a spread of W–O bond distances ranging from 2.14–2.22 Å. In the second W+2.89+ site, W+2.89+ is bonded in a 2-coordinate geometry to three O2- atoms. There are a spread of W–O bond distances ranging from 2.04–2.56 Å. In the third W+2.89+ site, W+2.89+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of W–O bond distances ranging from 2.05–2.46 Å. In the fourth W+2.89+ site, W+2.89+ is bonded to six O2- atoms to form WO6 octahedra that share a cornercorner with one WO6 octahedra, a cornercorner with one WO5 square pyramid, and edges with two equivalent WO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of W–O bond distances ranging from 1.97–2.18 Å. In the fifth W+2.89+ site, W+2.89+ is bonded to five O2- atoms to form distorted WO5 square pyramids that share corners with three WO6 octahedra and edges with two equivalent WO5 square pyramids. The corner-sharing octahedra tilt angles range from 22–74°. There are a spread of W–O bond distances ranging from 1.91–2.20 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted square co-planar geometry to four W+2.89+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two W+2.89+ atoms. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to three W+2.89+ atoms. In the fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three W+2.89+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to three W+2.89+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to four W+2.89+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three W+2.89+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W2Br5 by Materials Project

W2Br5 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one W2Br5 sheet oriented in the (1, 0, 0) direction. there are four inequivalent W+2.50+ sites. In the first W+2.50+ site, W+2.50+ is bonded to five Br1- atoms to form a mixture of corner and edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.52–2.74 Å. In the second W+2.50+ site, W+2.50+ is bonded to five Br1- atoms to form a mixture of corner and edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.60–2.72 Å. In the third W+2.50+ site, W+2.50+ is bonded to five Br1- atoms to form a mixture of corner and edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.60–2.72 Å. In the fourth W+2.50+ site, W+2.50+ is bonded to five Br1- atoms to form a mixture of corner and edge-sharing WBr5 square pyramids. There are a spread of W–Br bond distances ranging from 2.58–2.85 Å. There are ten inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 2-coordinate geometry to two W+2.50+ atoms. In the second Br1- site, Br1- is bonded in a 2-coordinate geometry to two W+2.50+ atoms. In the third Br1- site, Br1- is bonded in a 2-coordinate geometry to two W+2.50+ atoms. In the fourth Br1- site, Br1- is bonded in a bent 120 degrees geometry to two W+2.50+ atoms. In the fifth Br1- site, Br1- is bonded in a 12-coordinate geometry to three W+2.50+ atoms. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one W+2.50+ atom. In the seventh Br1- site, Br1- is bonded in a 7-coordinate geometry to two W+2.50+ atoms. In the eighth Br1- site, Br1- is bonded in a water-like geometry to two equivalent W+2.50+ atoms. In the ninth Br1- site, Br1- is bonded in a 2-coordinate geometry to two W+2.50+ atoms. In the tenth Br1- site, Br1- is bonded in a 4-coordinate geometry to two W+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2(WO4)3 by Materials Project

Cs2(WO4)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Cs sites. In the first Cs site, Cs is bonded in a 7-coordinate geometry to eleven O atoms. There are a spread of Cs–O bond distances ranging from 3.06–3.79 Å. In the second Cs site, Cs is bonded in a 12-coordinate geometry to five O atoms. There are a spread of Cs–O bond distances ranging from 3.11–3.45 Å. There are three inequivalent W sites. In the first W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 28–30°. There are a spread of W–O bond distances ranging from 1.78–2.07 Å. In the second W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 30–32°. There are a spread of W–O bond distances ranging from 1.81–2.02 Å. In the third W site, W is bonded to six O atoms to form distorted corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 28–32°. There are a spread of W–O bond distances ranging from 1.77–2.09 Å. There are twelve inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Cs and two W atoms. In the second O site, O is bonded in a 1-coordinate geometry to two Cs and one W atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Cs and two W atoms. In the fourth O site, O is bonded in a distorted single-bond geometry to two Cs and one W atom. In the fifth O site, O is bonded in a distorted single-bond geometry to two Cs and one W atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to one Cs and two W atoms. In the seventh O site, O is bonded in a bent 150 degrees geometry to one Cs and two W atoms. In the eighth O site, O is bonded in a distorted single-bond geometry to one Cs and one W atom. In the ninth O site, O is bonded in a bent 150 degrees geometry to one Cs and two W atoms. In the tenth O site, O is bonded in a 1-coordinate geometry to two Cs and one W atom. In the eleventh O site, O is bonded in a 1-coordinate geometry to two Cs and one W atom. In the twelfth O site, O is bonded in a bent 150 degrees geometry to two W atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuH32W6(Cl6O11)2 by Materials Project

W6CuH12(OCl)12(H2O)10 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of six water molecules; two water water molecules; and one W6CuH12(OCl)12 ribbon oriented in the (0, 1, 1) direction. In the W6CuH12(OCl)12 ribbon, there are three inequivalent W+3.83+ sites. In the first W+3.83+ site, W+3.83+ is bonded to two O2- and three Cl1- atoms to form distorted corner-sharing WCl3O2 square pyramids. Both W–O bond lengths are 1.97 Å. There are a spread of W–Cl bond distances ranging from 2.37–2.54 Å. In the second W+3.83+ site, W+3.83+ is bonded to two O2- and three Cl1- atoms to form distorted corner-sharing WCl3O2 square pyramids. There is one shorter (1.96 Å) and one longer (1.98 Å) W–O bond length. There are a spread of W–Cl bond distances ranging from 2.39–2.54 Å. In the third W+3.83+ site, W+3.83+ is bonded to two O2- and three Cl1- atoms to form distorted corner-sharing WCl3O2 square pyramids. There is one shorter (1.97 Å) and one longer (1.98 Å) W–O bond length. There are a spread of W–Cl bond distances ranging from 2.37–2.54 Å. Cu1+ is bonded in a distorted square co-planar geometry to four O2- and two equivalent Cl1- atoms. There is two shorter (1.96 Å) and two longer (1.99 Å) Cu–O bond length. Both Cu–Cl bond lengths are 2.87 Å. There are six inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.66 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a water-like geometry to two W+3.83+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to two W+3.83+ atoms. In the third O2- site, O2- is bonded in a water-like geometry to two W+3.83+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Cu1+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cu1+ and two H1+ atoms. In the sixth O2- site, O2- is bonded in a distorted water-like geometry to three H1+ atoms. There are six inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in an L-shaped geometry to two W+3.83+ atoms. In the second Cl1- site, Cl1- is bonded in an L-shaped geometry to two W+3.83+ atoms. In the third Cl1- site, Cl1- is bonded in an L-shaped geometry to two W+3.83+ atoms. In the fourth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to one W+3.83+ and one Cu1+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one W+3.83+ atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one W+3.83+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Na6Te(W3O23)2 by Materials Project

Na6Te(W3O23)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Na sites. In the first Na site, Na is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Na–O bond distances ranging from 2.32–3.06 Å. In the second Na site, Na is bonded in a 1-coordinate geometry to five O atoms. There are a spread of Na–O bond distances ranging from 2.29–2.82 Å. In the third Na site, Na is bonded in a 6-coordinate geometry to six O atoms. There are a spread of Na–O bond distances ranging from 2.36–2.93 Å. There are three inequivalent W sites. In the first W site, W is bonded in a 6-coordinate geometry to six O atoms. There are a spread of W–O bond distances ranging from 1.75–2.42 Å. In the second W site, W is bonded in a 6-coordinate geometry to six O atoms. There are a spread of W–O bond distances ranging from 1.76–2.30 Å. In the third W site, W is bonded in a 6-coordinate geometry to six O atoms. There are a spread of W–O bond distances ranging from 1.77–2.41 Å. Te is bonded in an octahedral geometry to six O atoms. There is four shorter (1.96 Å) and two longer (1.99 Å) Te–O bond length. There are twenty-three inequivalent O sites. In the first O site, O is bonded in a 1-coordinate geometry to one Na, two W, and one Te atom. In the second O site, O is bonded in a distorted trigonal non-coplanar geometry to two W and one Te atom. In the third O site, O is bonded in a 1-coordinate geometry to two W and one Te atom. In the fourth O site, O is bonded in a bent 120 degrees geometry to two W atoms. In the fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to one Na and two W atoms. In the sixth O site, O is bonded in a single-bond geometry to one W atom. In the seventh O site, O is bonded in a single-bond geometry to one W atom. In the eighth O site, O is bonded in a single-bond geometry to one W atom. In the ninth O site, O is bonded in a distorted L-shaped geometry to one Na and one W atom. In the tenth O site, O is bonded in a linear geometry to one Na and one W atom. In the eleventh O site, O is bonded in a trigonal planar geometry to one Na and two W atoms. In the twelfth O site, O is bonded in a distorted single-bond geometry to one Na and one W atom. In the thirteenth O site, O is bonded in a single-bond geometry to one O atom. The O–O bond length is 1.24 Å. In the fourteenth O site, O is bonded in a water-like geometry to one Na and one O atom. The O–O bond length is 1.27 Å. In the fifteenth O site, O is bonded in a trigonal planar geometry to two equivalent Na and one O atom. The O–O bond length is 1.31 Å. In the sixteenth O site, O is bonded in a distorted bent 120 degrees geometry to two Na and one O atom. In the seventeenth O site, O is bonded in a 4-coordinate geometry to three Na and one O atom. The O–O bond length is 1.34 Å. In the eighteenth O site, O is bonded in a distorted trigonal planar geometry to one Na and two O atoms. In the nineteenth O site, O is bonded in a bent 120 degrees geometry to two O atoms. The O–O bond length is 1.28 Å. In the twentieth O site, O is bonded in a single-bond geometry to one O atom. The O–O bond length is 1.23 Å. In the twenty-first O site, O is bonded in a water-like geometry to two Na atoms. In the twenty-second O site, O is bonded in a bent 120 degrees geometry to one Na and one O atom. In the twenty-third O site, O is bonded in an L-shaped geometry to one Na and one O atom.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Stability and mobility of tungsten clusters on tungsten (110) surface: Ab initio and atomistic simulations

Quantifying the surface transport properties of tungsten (W) is of prime importance to understand the formation of nano-fuzz in fusion plasma-facing conditions. The stability and mobility of W adatom clusters (W n , n = 2-9) on the W(110) surface has been investigated by computer simulations, including ab initio calculations using density functional theory (DFT) and molecular statics (MS) simulations with multiple W interatomic potentials. The DFT results demonstrate that the sequential binding energy generally increases with number of W adatoms, except for the 5 th and 7 th W adatoms. The most common elemental migration steps of W n (n>2) clusters are observed to consist of monomer and dimer hops, while larger W n clusters can also diffuse by dissociation and recombination of smaller clusters. The threshold migration energy of W 9 is the highest, then followed by W 8 , W 4 , and W 6 , while W 3 , W 5 , and W 7 have similar migration energies. Compared to DFT, each interatomic potential evaluated overestimates the binding energies of W n clusters. Additionally, the embedded-atom potential developed by Juslin and Wirth adequately predicts the threshold migration energy of W n (n>2) clusters, although it predicts different underlying migration mechanisms. The results show that interaction mechanism between W adatoms controls the stability and mobility of W n clusters on the W(110) surface.

36 MATERIALS SCIENCE↗