Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Pt”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 757 records · Page 42
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Pu5Pt3 by Materials Project

Pu5Pt3 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are seven inequivalent Pu sites. In the first Pu site, Pu is bonded in a 5-coordinate geometry to five Pt atoms. There are a spread of Pu–Pt bond distances ranging from 2.92–3.24 Å. In the second Pu site, Pu is bonded in a 5-coordinate geometry to five Pt atoms. There are a spread of Pu–Pt bond distances ranging from 2.90–3.24 Å. In the third Pu site, Pu is bonded in a 6-coordinate geometry to six Pt atoms. There are two shorter (3.02 Å) and four longer (3.03 Å) Pu–Pt bond lengths. In the fourth Pu site, Pu is bonded in a 5-coordinate geometry to five Pt atoms. There are a spread of Pu–Pt bond distances ranging from 2.91–3.24 Å. In the fifth Pu site, Pu is bonded in a 6-coordinate geometry to six Pt atoms. All Pu–Pt bond lengths are 3.04 Å. In the sixth Pu site, Pu is bonded in a 6-coordinate geometry to six Pt atoms. There are two shorter (3.02 Å) and four longer (3.03 Å) Pu–Pt bond lengths. In the seventh Pu site, Pu is bonded in a 6-coordinate geometry to six Pt atoms. There are four shorter (3.03 Å) and two longer (3.04 Å) Pu–Pt bond lengths. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to nine Pu atoms. In the second Pt site, Pt is bonded in a 9-coordinate geometry to nine Pu atoms. In the third Pt site, Pt is bonded in a 9-coordinate geometry to nine Pu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on FeNiPt6 by Materials Project

FePt6Ni is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Fe3+ is bonded to twelve Pt+0.83- atoms to form FePt12 cuboctahedra that share corners with four equivalent FePt12 cuboctahedra, corners with eight equivalent NiPt12 cuboctahedra, edges with twenty-four PtNi4Pt8 cuboctahedra, faces with two equivalent NiPt12 cuboctahedra, faces with four equivalent FePt12 cuboctahedra, and faces with twelve PtFe4Pt8 cuboctahedra. There are eight shorter (2.76 Å) and four longer (2.77 Å) Fe–Pt bond lengths. There are three inequivalent Pt+0.83- sites. In the first Pt+0.83- site, Pt+0.83- is bonded to four equivalent Fe3+ and eight equivalent Pt+0.83- atoms to form PtFe4Pt8 cuboctahedra that share corners with twelve PtFe4Pt8 cuboctahedra, edges with eight equivalent NiPt12 cuboctahedra, edges with sixteen equivalent PtFe2Ni2Pt8 cuboctahedra, faces with four equivalent FePt12 cuboctahedra, and faces with fourteen PtFe4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.76 Å. In the second Pt+0.83- site, Pt+0.83- is bonded to eight equivalent Pt+0.83- and four equivalent Ni2+ atoms to form PtNi4Pt8 cuboctahedra that share corners with twelve PtFe4Pt8 cuboctahedra, edges with eight equivalent FePt12 cuboctahedra, edges with sixteen equivalent PtFe2Ni2Pt8 cuboctahedra, faces with four equivalent NiPt12 cuboctahedra, and faces with fourteen PtFe4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å. All Pt–Ni bond lengths are 2.77 Å. In the third Pt+0.83- site, Pt+0.83- is bonded to two equivalent Fe3+, eight Pt+0.83-, and two equivalent Ni2+ atoms to form distorted PtFe2Ni2Pt8 cuboctahedra that share corners with twelve equivalent PtFe2Ni2Pt8 cuboctahedra, edges with four equivalent FePt12 cuboctahedra, edges with four equivalent NiPt12 cuboctahedra, edges with sixteen PtFe4Pt8 cuboctahedra, faces with two equivalent FePt12 cuboctahedra, faces with two equivalent NiPt12 cuboctahedra, and faces with fourteen PtFe4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å. Both Pt–Ni bond lengths are 2.77 Å. Ni2+ is bonded to twelve Pt+0.83- atoms to form NiPt12 cuboctahedra that share corners with four equivalent NiPt12 cuboctahedra, corners with eight equivalent FePt12 cuboctahedra, edges with twenty-four PtFe4Pt8 cuboctahedra, faces with two equivalent FePt12 cuboctahedra, faces with four equivalent NiPt12 cuboctahedra, and faces with twelve PtNi4Pt8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaCe(GePt)4 by Materials Project

CeLa(PtGe)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Ce is bonded in a 12-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of Ce–Pt bond distances ranging from 3.29–3.40 Å. There are a spread of Ce–Ge bond distances ranging from 3.25–3.40 Å. La is bonded in a 8-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of La–Pt bond distances ranging from 3.33–3.42 Å. There are a spread of La–Ge bond distances ranging from 3.30–3.39 Å. There are four inequivalent Pt sites. In the first Pt site, Pt is bonded in a 5-coordinate geometry to four equivalent La and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.49–2.54 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Ce and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.45–2.53 Å. In the third Pt site, Pt is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent La, and four Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.54–2.60 Å. In the fourth Pt site, Pt is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent La, and four Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.54–2.58 Å. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent La, and four Pt atoms. In the second Ge site, Ge is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent La, and four Pt atoms. In the third Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent La and five Pt atoms. In the fourth Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Ce and five Pt atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on PtRh by Materials Project

PtRh is Copper-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are two inequivalent Rh sites. In the first Rh site, Rh is bonded to six equivalent Rh and six Pt atoms to form RhPt6Rh6 cuboctahedra that share corners with twelve RhPt6Rh6 cuboctahedra, edges with twelve RhPt6Rh6 cuboctahedra, edges with twelve PtPt6Rh6 cuboctahedra, faces with six equivalent RhPt6Rh6 cuboctahedra, and faces with twelve PtPt6Rh6 cuboctahedra. All Rh–Rh bond lengths are 2.77 Å. All Rh–Pt bond lengths are 2.76 Å. In the second Rh site, Rh is bonded to ten equivalent Rh and six Pt atoms to form RhPt6Rh10 cuboctahedra that share corners with ten PtPt6Rh6 cuboctahedra, corners with twelve RhPt6Rh6 cuboctahedra, edges with eight PtPt6Rh6 cuboctahedra, edges with sixteen RhPt6Rh6 cuboctahedra, faces with sixteen equivalent RhPt6Rh10 cuboctahedra, and faces with eighteen PtPt6Rh6 cuboctahedra. There are a spread of Rh–Rh bond distances ranging from 2.77–5.54 Å. All Rh–Pt bond lengths are 2.76 Å. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded to six equivalent Rh and six equivalent Pt atoms to form PtPt6Rh6 cuboctahedra that share corners with twelve PtPt6Rh6 cuboctahedra, edges with twelve equivalent RhPt6Rh6 cuboctahedra, edges with twelve PtPt6Rh6 cuboctahedra, faces with six equivalent PtPt6Rh6 cuboctahedra, and faces with twelve equivalent RhPt6Rh6 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å. In the second Pt site, Pt is bonded to six Rh and six equivalent Pt atoms to form PtPt6Rh6 cuboctahedra that share corners with five equivalent RhPt6Rh10 cuboctahedra, corners with twelve PtPt6Rh6 cuboctahedra, edges with ten RhPt6Rh6 cuboctahedra, edges with twelve PtPt6Rh6 cuboctahedra, faces with six equivalent PtPt6Rh6 cuboctahedra, and faces with fifteen RhPt6Rh6 cuboctahedra. All Pt–Rh bond lengths are 2.76 Å. All Pt–Pt bond lengths are 2.77 Å. In the third Pt site, Pt is bonded to six Rh and six equivalent Pt atoms to form PtPt6Rh6 cuboctahedra that share corners with five equivalent RhPt6Rh10 cuboctahedra, corners with twelve PtPt6Rh6 cuboctahedra, edges with ten RhPt6Rh6 cuboctahedra, edges with twelve PtPt6Rh6 cuboctahedra, faces with six equivalent PtPt6Rh6 cuboctahedra, and faces with fifteen RhPt6Rh6 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CeY(GePt)4 by Materials Project

CeY(PtGe)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Ce is bonded in a 2-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of Ce–Pt bond distances ranging from 3.24–3.40 Å. There are a spread of Ce–Ge bond distances ranging from 3.23–3.36 Å. Y is bonded in a 8-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of Y–Pt bond distances ranging from 3.23–3.41 Å. There are a spread of Y–Ge bond distances ranging from 3.22–3.42 Å. There are four inequivalent Pt sites. In the first Pt site, Pt is bonded in a 5-coordinate geometry to four equivalent Y and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.43–2.52 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Ce and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.46–2.53 Å. In the third Pt site, Pt is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent Y, and four Ge atoms. There are one shorter (2.55 Å) and three longer (2.56 Å) Pt–Ge bond lengths. In the fourth Pt site, Pt is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent Y, and four Ge atoms. There are one shorter (2.55 Å) and three longer (2.56 Å) Pt–Ge bond lengths. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent Y, and four Pt atoms. In the second Ge site, Ge is bonded in a 4-coordinate geometry to two equivalent Ce, two equivalent Y, and four Pt atoms. In the third Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Y and five Pt atoms. In the fourth Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Ce and five Pt atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb3Ge13Pt4 by Materials Project

Yb3Pt4Ge13 crystallizes in the tetragonal P4_2cm space group. The structure is three-dimensional. there are three inequivalent Yb sites. In the first Yb site, Yb is bonded in a 12-coordinate geometry to four equivalent Pt and twelve Ge atoms. All Yb–Pt bond lengths are 3.24 Å. There are a spread of Yb–Ge bond distances ranging from 3.25–3.30 Å. In the second Yb site, Yb is bonded in a 12-coordinate geometry to four equivalent Pt and twelve Ge atoms. All Yb–Pt bond lengths are 3.22 Å. There are a spread of Yb–Ge bond distances ranging from 3.01–3.45 Å. In the third Yb site, Yb is bonded in a 12-coordinate geometry to four Pt and twelve Ge atoms. There are a spread of Yb–Pt bond distances ranging from 3.16–3.26 Å. There are a spread of Yb–Ge bond distances ranging from 3.04–3.52 Å. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to three Yb and six Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.55–2.58 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to three Yb and six Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.50–2.61 Å. There are nine inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to three equivalent Yb, two Pt, and two Ge atoms. There are one shorter (2.62 Å) and one longer (2.67 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 2-coordinate geometry to three Yb, two equivalent Pt, and two equivalent Ge atoms. There are one shorter (2.81 Å) and one longer (2.87 Å) Ge–Ge bond lengths. In the third Ge site, Ge is bonded in a 2-coordinate geometry to three Yb, two equivalent Pt, and two Ge atoms. There are one shorter (2.69 Å) and one longer (2.80 Å) Ge–Ge bond lengths. In the fourth Ge site, Ge is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Ge–Ge bond distances ranging from 2.53–2.82 Å. In the fifth Ge site, Ge is bonded in a 7-coordinate geometry to three equivalent Yb, two Pt, and two Ge atoms. The Ge–Ge bond length is 2.73 Å. In the sixth Ge site, Ge is bonded in a 7-coordinate geometry to three Yb, two equivalent Pt, and two Ge atoms. The Ge–Ge bond length is 2.68 Å. In the seventh Ge site, Ge is bonded in a 2-coordinate geometry to three Yb, two equivalent Pt, and two Ge atoms. In the eighth Ge site, Ge is bonded in a 2-coordinate geometry to three Yb, two equivalent Pt, and one Ge atom. In the ninth Ge site, Ge is bonded in a 2-coordinate geometry to three Yb, two equivalent Pt, and two Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg16Al12Pt by Materials Project

Mg16PtAl12 is beta Plutonium-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are sixteen inequivalent Mg sites. In the first Mg site, Mg is bonded in a 6-coordinate geometry to four Mg and twelve Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.15–3.37 Å. There are a spread of Mg–Al bond distances ranging from 3.07–3.30 Å. In the second Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.04–3.13 Å. There are a spread of Mg–Al bond distances ranging from 2.95–3.13 Å. In the third Mg site, Mg is bonded in a 1-coordinate geometry to two Mg, one Pt, and five Al atoms. The Mg–Pt bond length is 2.82 Å. There are a spread of Mg–Al bond distances ranging from 3.03–3.14 Å. In the fourth Mg site, Mg is bonded in a 1-coordinate geometry to five Mg, one Pt, and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.09–3.14 Å. The Mg–Pt bond length is 2.94 Å. There are a spread of Mg–Al bond distances ranging from 2.99–3.30 Å. In the fifth Mg site, Mg is bonded in a 12-coordinate geometry to four Mg, one Pt, and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.01–3.33 Å. The Mg–Pt bond length is 3.16 Å. There are a spread of Mg–Al bond distances ranging from 2.85–3.14 Å. In the sixth Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.10–3.15 Å. There are a spread of Mg–Al bond distances ranging from 2.88–3.23 Å. In the seventh Mg site, Mg is bonded in a 1-coordinate geometry to three Mg, one Pt, and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.10–3.19 Å. The Mg–Pt bond length is 2.76 Å. There are a spread of Mg–Al bond distances ranging from 2.87–3.18 Å. In the eighth Mg site, Mg is bonded in a 10-coordinate geometry to four Mg and six Al atoms. There are one shorter (3.04 Å) and one longer (3.05 Å) Mg–Mg bond lengths. There are a spread of Mg–Al bond distances ranging from 3.04–3.15 Å. In the ninth Mg site, Mg is bonded in a 1-coordinate geometry to seven Mg, one Pt, and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.06–3.23 Å. The Mg–Pt bond length is 3.18 Å. There are a spread of Mg–Al bond distances ranging from 2.87–3.23 Å. In the tenth Mg site, Mg is bonded in a 12-coordinate geometry to four Mg and five Al atoms. There are one shorter (3.17 Å) and one longer (3.18 Å) Mg–Mg bond lengths. There are a spread of Mg–Al bond distances ranging from 2.89–3.05 Å. In the eleventh Mg site, Mg is bonded in a 12-coordinate geometry to five Mg and five Al atoms. The Mg–Mg bond length is 3.09 Å. There are a spread of Mg–Al bond distances ranging from 2.91–3.07 Å. In the twelfth Mg site, Mg is bonded in a 1-coordinate geometry to seven Mg, one Pt, and five Al atoms. There are a spread of Mg–Mg bond distances ranging from 3.00–3.14 Å. The Mg–Pt bond length is 3.15 Å. There are a spread of Mg–Al bond distances ranging from 2.85–3.24 Å. In the thirteenth Mg site, Mg is bonded in a 10-coordinate geometry to two Mg and seven Al atoms. There are a spread of Mg–Al bond distances ranging from 3.08–3.37 Å. In the fourteenth Mg site, Mg is bonded in a 2-coordinate geometry to three Mg, one Pt, and four Al atoms. The Mg–Pt bond length is 2.79 Å. There are a spread of Mg–Al bond distances ranging from 2.86–3.18 Å. In the fifteenth Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Al atoms. The Mg–Mg bond length is 3.33 Å. There are a spread of Mg–Al bond distances ranging from 2.88–3.23 Å. In the sixteenth Mg site, Mg is bonded in a 12-coordinate geometry to three Mg, one Pt, and five Al atoms. The Mg–Pt bond length is 3.16 Å. There are a spread of Mg–Al bond distances ranging from 2.85–3.15 Å. Pt is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are a spread of Pt–Al bond distances ranging from 2.60–2.64 Å. There are twelve inequivalent Al sites. In the first Al site, Al is bonded in a 1-coordinate geometry to seven Mg, one Pt, and three Al atoms. There are two shorter (2.73 Å) and one longer (2.76 Å) Al–Al bond lengths. In the second Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are one shorter (2.73 Å) and one longer (2.76 Å) Al–Al bond lengths. In the third Al site, Al is bonded in a 10-coordinate geometry to seven Mg and three Al atoms. There are one shorter (2.68 Å) and two longer (2.72 Å) Al–Al bond lengths. In the fourth Al site, Al is bonded in a 1-coordinate geometry to eight Mg, one Pt, and three Al atoms. There are one shorter (2.70 Å) and one longer (2.71 Å) Al–Al bond lengths. In the fifth Al site, Al is bonded in a 10-coordinate geometry to seven Mg and three Al atoms. There are one shorter (2.65 Å) and one longer (2.72 Å) Al–Al bond lengths. In the sixth Al site, Al is bonded in a 12-coordinate geometry to nine Mg and three Al atoms. The Al–Al bond length is 2.74 Å. In the seventh Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. In the eighth Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are a spread of Al–Al bond distances ranging from 2.69–2.73 Å. In the ninth Al site, Al is bonded in a 11-coordinate geometry to eight Mg and three Al atoms. There are one shorter (2.66 Å) and one longer (2.71 Å) Al–Al bond lengths. In the tenth Al site, Al is bonded in a 10-coordinate geometry to seven Mg and three Al atoms. In the eleventh Al site, Al is bonded in a 1-coordinate geometry to five Mg, one Pt, and three Al atoms. In the twelfth Al site, Al is bonded in a 10-coordinate geometry to seven Mg and three Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr2In4Pt3 by Materials Project

Sr2Pt3In4 crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. there are three inequivalent Sr sites. In the first Sr site, Sr is bonded in a 2-coordinate geometry to six Pt and ten In atoms. There are two shorter (3.35 Å) and four longer (3.56 Å) Sr–Pt bond lengths. There are a spread of Sr–In bond distances ranging from 3.59–3.81 Å. In the second Sr site, Sr is bonded in a 6-coordinate geometry to six equivalent Pt and nine In atoms. All Sr–Pt bond lengths are 3.46 Å. There are six shorter (3.73 Å) and three longer (3.74 Å) Sr–In bond lengths. In the third Sr site, Sr is bonded in a 1-coordinate geometry to five Pt and eight In atoms. There are one shorter (2.99 Å) and four longer (3.25 Å) Sr–Pt bond lengths. There are a spread of Sr–In bond distances ranging from 3.39–3.44 Å. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Sr and five In atoms. There are a spread of Pt–In bond distances ranging from 2.69–2.85 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to three Sr and six In atoms. There are two shorter (2.74 Å) and four longer (2.96 Å) Pt–In bond lengths. In the third Pt site, Pt is bonded in a 9-coordinate geometry to four Sr and five In atoms. There are a spread of Pt–In bond distances ranging from 2.79–2.84 Å. There are four inequivalent In sites. In the first In site, In is bonded in a 4-coordinate geometry to five Sr and four Pt atoms. In the second In site, In is bonded in a 4-coordinate geometry to four Sr and four Pt atoms. In the third In site, In is bonded in a distorted trigonal planar geometry to six equivalent Sr and three equivalent Pt atoms. In the fourth In site, In is bonded in a 4-coordinate geometry to four Sr and four Pt atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ce2Al16Pt9 by Materials Project

Ce2Pt9Al16 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Ce is bonded in a 4-coordinate geometry to six Pt and ten Al atoms. There are four shorter (3.29 Å) and two longer (3.41 Å) Ce–Pt bond lengths. There are a spread of Ce–Al bond distances ranging from 3.33–3.40 Å. There are four inequivalent Pt sites. In the first Pt site, Pt is bonded in a 8-coordinate geometry to eight Al atoms. There are a spread of Pt–Al bond distances ranging from 2.53–2.72 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to two equivalent Ce and seven Al atoms. There are a spread of Pt–Al bond distances ranging from 2.49–2.68 Å. In the third Pt site, Pt is bonded in a 10-coordinate geometry to two equivalent Ce and eight Al atoms. There are a spread of Pt–Al bond distances ranging from 2.55–2.70 Å. In the fourth Pt site, Pt is bonded in a body-centered cubic geometry to eight Al atoms. There are four shorter (2.52 Å) and four longer (2.63 Å) Pt–Al bond lengths. There are five inequivalent Al sites. In the first Al site, Al is bonded to one Ce and four Pt atoms to form distorted AlCePt4 tetrahedra that share corners with eleven AlCePt4 tetrahedra, edges with four AlPt4 tetrahedra, and faces with three AlCePt4 tetrahedra. In the second Al site, Al is bonded in a 5-coordinate geometry to one Ce and five Pt atoms. In the third Al site, Al is bonded to two equivalent Ce and four Pt atoms to form distorted AlCe2Pt4 tetrahedra that share corners with nine AlCePt4 tetrahedra, edges with six AlCePt4 tetrahedra, and faces with four AlCe2Pt4 tetrahedra. In the fourth Al site, Al is bonded to two equivalent Ce and four Pt atoms to form distorted AlCe2Pt4 tetrahedra that share corners with sixteen AlCePt4 tetrahedra, edges with three equivalent AlCe2Pt4 tetrahedra, and faces with two equivalent AlCe2Pt4 tetrahedra. In the fifth Al site, Al is bonded to four Pt atoms to form distorted AlPt4 tetrahedra that share corners with ten AlCePt4 tetrahedra and edges with five AlPt4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sn2(PdPt)3 by Materials Project

Sn2(PtPd)3 crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. there are three inequivalent Pt sites. In the first Pt site, Pt is bonded to four equivalent Pt, four equivalent Pd, and four equivalent Sn atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with four equivalent PtSn4Pd4Pt4 cuboctahedra, corners with eight equivalent PdSn4Pd4Pt4 cuboctahedra, edges with eight equivalent PtSn4Pd8 cuboctahedra, edges with eight equivalent PdSn4Pd2Pt6 cuboctahedra, edges with eight equivalent SnPd6Pt6 cuboctahedra, faces with four equivalent SnPd6Pt6 cuboctahedra, faces with six PdSn4Pd2Pt6 cuboctahedra, and faces with eight PtSn4Pd4Pt4 cuboctahedra. All Pt–Pt bond lengths are 2.87 Å. All Pt–Pd bond lengths are 2.86 Å. All Pt–Sn bond lengths are 2.87 Å. In the second Pt site, Pt is bonded to eight Pd and four equivalent Sn atoms to form PtSn4Pd8 cuboctahedra that share corners with twelve PtSn4Pd8 cuboctahedra, edges with eight equivalent PtSn4Pd4Pt4 cuboctahedra, edges with eight equivalent PdSn4Pd2Pt6 cuboctahedra, edges with eight equivalent SnPd6Pt6 cuboctahedra, faces with four equivalent SnPd6Pt6 cuboctahedra, faces with six PtSn4Pd8 cuboctahedra, and faces with eight PdSn4Pd2Pt6 cuboctahedra. All Pt–Pd bond lengths are 2.87 Å. All Pt–Sn bond lengths are 2.85 Å. In the third Pt site, Pt is bonded to four equivalent Pt, four equivalent Pd, and four equivalent Sn atoms to form PtSn4Pd4Pt4 cuboctahedra that share corners with twelve PtSn4Pd8 cuboctahedra, edges with eight equivalent SnPd6Pt6 cuboctahedra, edges with sixteen PdSn4Pd2Pt6 cuboctahedra, faces with four equivalent PdSn4Pd2Pt6 cuboctahedra, faces with four equivalent SnPd6Pt6 cuboctahedra, and faces with ten PtSn4Pd4Pt4 cuboctahedra. All Pt–Pd bond lengths are 2.87 Å. All Pt–Sn bond lengths are 2.87 Å. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded to six Pt, two equivalent Pd, and four equivalent Sn atoms to form PdSn4Pd2Pt6 cuboctahedra that share corners with twelve equivalent PdSn4Pd2Pt6 cuboctahedra, edges with four equivalent PdSn4Pd4Pt4 cuboctahedra, edges with eight equivalent SnPd6Pt6 cuboctahedra, edges with twelve PtSn4Pd4Pt4 cuboctahedra, faces with four equivalent SnPd6Pt6 cuboctahedra, faces with six PtSn4Pd4Pt4 cuboctahedra, and faces with eight PdSn4Pd2Pt6 cuboctahedra. Both Pd–Pd bond lengths are 2.86 Å. All Pd–Sn bond lengths are 2.87 Å. In the second Pd site, Pd is bonded to four equivalent Pt, four equivalent Pd, and four equivalent Sn atoms to form PdSn4Pd4Pt4 cuboctahedra that share corners with four equivalent PdSn4Pd4Pt4 cuboctahedra, corners with eight equivalent PtSn4Pd4Pt4 cuboctahedra, edges with eight equivalent PtSn4Pd4Pt4 cuboctahedra, edges with eight equivalent PdSn4Pd2Pt6 cuboctahedra, edges with eight equivalent SnPd6Pt6 cuboctahedra, faces with four equivalent SnPd6Pt6 cuboctahedra, faces with six PtSn4Pd4Pt4 cuboctahedra, and faces with eight PdSn4Pd2Pt6 cuboctahedra. All Pd–Sn bond lengths are 2.86 Å. Sn is bonded to six Pt and six Pd atoms to form SnPd6Pt6 cuboctahedra that share corners with twelve equivalent SnPd6Pt6 cuboctahedra, edges with twelve PtSn4Pd4Pt4 cuboctahedra, edges with twelve PdSn4Pd2Pt6 cuboctahedra, faces with six PtSn4Pd4Pt4 cuboctahedra, faces with six PdSn4Pd2Pt6 cuboctahedra, and faces with six equivalent SnPd6Pt6 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnCrPt6 by Materials Project

CrMnPt6 is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Cr3+ is bonded to twelve Pt+0.83- atoms to form CrPt12 cuboctahedra that share corners with four equivalent CrPt12 cuboctahedra, corners with eight equivalent MnPt12 cuboctahedra, edges with twenty-four PtMn4Pt8 cuboctahedra, faces with two equivalent MnPt12 cuboctahedra, faces with four equivalent CrPt12 cuboctahedra, and faces with twelve PtCr4Pt8 cuboctahedra. There are eight shorter (2.77 Å) and four longer (2.78 Å) Cr–Pt bond lengths. Mn2+ is bonded to twelve Pt+0.83- atoms to form MnPt12 cuboctahedra that share corners with four equivalent MnPt12 cuboctahedra, corners with eight equivalent CrPt12 cuboctahedra, edges with twenty-four PtCr4Pt8 cuboctahedra, faces with two equivalent CrPt12 cuboctahedra, faces with four equivalent MnPt12 cuboctahedra, and faces with twelve PtMn4Pt8 cuboctahedra. There are four shorter (2.78 Å) and eight longer (2.79 Å) Mn–Pt bond lengths. There are three inequivalent Pt+0.83- sites. In the first Pt+0.83- site, Pt+0.83- is bonded to four equivalent Cr3+ and eight equivalent Pt+0.83- atoms to form distorted PtCr4Pt8 cuboctahedra that share corners with twelve PtCr4Pt8 cuboctahedra, edges with eight equivalent MnPt12 cuboctahedra, edges with sixteen equivalent PtMn2Cr2Pt8 cuboctahedra, faces with four equivalent CrPt12 cuboctahedra, and faces with fourteen PtCr4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å. In the second Pt+0.83- site, Pt+0.83- is bonded to four equivalent Mn2+ and eight equivalent Pt+0.83- atoms to form distorted PtMn4Pt8 cuboctahedra that share corners with twelve PtCr4Pt8 cuboctahedra, edges with eight equivalent CrPt12 cuboctahedra, edges with sixteen equivalent PtMn2Cr2Pt8 cuboctahedra, faces with four equivalent MnPt12 cuboctahedra, and faces with fourteen PtCr4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.79 Å. In the third Pt+0.83- site, Pt+0.83- is bonded to two equivalent Cr3+, two equivalent Mn2+, and eight Pt+0.83- atoms to form distorted PtMn2Cr2Pt8 cuboctahedra that share corners with twelve equivalent PtMn2Cr2Pt8 cuboctahedra, edges with four equivalent CrPt12 cuboctahedra, edges with four equivalent MnPt12 cuboctahedra, edges with sixteen PtCr4Pt8 cuboctahedra, faces with two equivalent CrPt12 cuboctahedra, faces with two equivalent MnPt12 cuboctahedra, and faces with fourteen PtCr4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.78 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on In2AsPt8 by Materials Project

Pt8In2As crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are three inequivalent Pt+0.38- sites. In the first Pt+0.38- site, Pt+0.38- is bonded to eight Pt+0.38- and four equivalent In3+ atoms to form distorted PtIn4Pt8 cuboctahedra that share corners with four equivalent PtIn4Pt8 cuboctahedra, edges with eight equivalent PtIn4Pt8 cuboctahedra, edges with eight equivalent InPt12 cuboctahedra, faces with four equivalent InPt12 cuboctahedra, and faces with twelve PtIn4Pt8 cuboctahedra. There are four shorter (2.86 Å) and four longer (2.87 Å) Pt–Pt bond lengths. All Pt–In bond lengths are 2.86 Å. In the second Pt+0.38- site, Pt+0.38- is bonded in a 4-coordinate geometry to two equivalent Pt+0.38-, two equivalent In3+, and two equivalent As3- atoms. Both Pt–Pt bond lengths are 2.88 Å. Both Pt–In bond lengths are 2.89 Å. Both Pt–As bond lengths are 2.55 Å. In the third Pt+0.38- site, Pt+0.38- is bonded to eight Pt+0.38- and four equivalent In3+ atoms to form distorted PtIn4Pt8 cuboctahedra that share corners with eight equivalent PtIn4Pt8 cuboctahedra, edges with four equivalent InPt12 cuboctahedra, edges with eight equivalent PtIn4Pt8 cuboctahedra, faces with four equivalent InPt12 cuboctahedra, and faces with nine PtIn4Pt8 cuboctahedra. All Pt–In bond lengths are 2.86 Å. In3+ is bonded to twelve Pt+0.38- atoms to form InPt12 cuboctahedra that share corners with eight equivalent InPt12 cuboctahedra, edges with twelve PtIn4Pt8 cuboctahedra, faces with five equivalent InPt12 cuboctahedra, and faces with eight PtIn4Pt8 cuboctahedra. As3- is bonded in a body-centered cubic geometry to eight equivalent Pt+0.38- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2025

How the Arrangement of Platinum Atoms on Ruthenium Nanoparticles Improves Hydrogen Evolution Activity

The platinum‐ruthenium (PtRu) system is highly active for hydrogen evolution reaction (HER) in alkaline media with both Pt and Ru playing active roles in the water dissociation step that generates adsorbed hydrogen atoms. Precise control of the arrangement of Pt atoms on Ru nanoparticles can maximize the Pt‐Ru sites for water dissociation and Pt‐Pt sites for hydrogen production and can considerably improve HER catalytic performance. By directing the growth and distribution of Pt on Ru hourglass nanoparticles, the arrangement of Pt on Ru is controlled into forming Pt islands, small Pt clusters, and strings of a few Pt atoms. Calculations show that the unique atomic string arrangements of Pt on Ru is the thermodynamically favorable configuration. Additionally, these strings have a favorable combination of Pt‐Ru and Pt‐Pt sites, making the Pt‐string on Ru the most active catalyst with a more than fivefold increase in turnover frequency for alkaline HER compared to the Pt‐island on Ru catalyst. The results show how controlling the Pt atomic arrangement on Ru nanoparticle surfaces for the tuning of Pt‐Pt and Pt‐Ru neighboring sites can direct toward a more efficient HER mechanism and thereby significantly enhancing HER performance.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlPt2 by Materials Project

AlPt2 crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. there are five inequivalent Pt sites. In the first Pt site, Pt is bonded in a 12-coordinate geometry to five Al atoms. There are a spread of Pt–Al bond distances ranging from 2.60–2.89 Å. In the second Pt site, Pt is bonded in a distorted square co-planar geometry to four Al atoms. There are two shorter (2.71 Å) and two longer (2.74 Å) Pt–Al bond lengths. In the third Pt site, Pt is bonded in a 4-coordinate geometry to four Al atoms. There are a spread of Pt–Al bond distances ranging from 2.62–2.87 Å. In the fourth Pt site, Pt is bonded in a 12-coordinate geometry to six Al atoms. There are four shorter (2.70 Å) and two longer (2.76 Å) Pt–Al bond lengths. In the fifth Pt site, Pt is bonded in a 12-coordinate geometry to six Al atoms. There are a spread of Pt–Al bond distances ranging from 2.54–2.99 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded to twelve Pt atoms to form a mixture of corner and face-sharing AlPt12 cuboctahedra. In the second Al site, Al is bonded in a 10-coordinate geometry to ten Pt atoms. In the third Al site, Al is bonded in a distorted body-centered cubic geometry to eight Pt atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Sn5Pt3 by Materials Project

Ca2Pt3Sn5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 8-coordinate geometry to two equivalent Pt and six Sn atoms. Both Ca–Pt bond lengths are 3.26 Å. There are a spread of Ca–Sn bond distances ranging from 3.24–3.28 Å. In the second Ca site, Ca is bonded in a 1-coordinate geometry to five Pt and eight Sn atoms. There are a spread of Ca–Pt bond distances ranging from 2.95–3.39 Å. There are a spread of Ca–Sn bond distances ranging from 3.20–3.45 Å. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to three Ca and six Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.73–2.96 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Ca and five Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.68–2.85 Å. In the third Pt site, Pt is bonded in a 7-coordinate geometry to seven Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.78–2.92 Å. There are five inequivalent Sn sites. In the first Sn site, Sn is bonded in a 5-coordinate geometry to two equivalent Ca, three equivalent Pt, and one Sn atom. The Sn–Sn bond length is 3.09 Å. In the second Sn site, Sn is bonded in a 6-coordinate geometry to two equivalent Ca and four Pt atoms. In the third Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Ca and four Pt atoms. In the fourth Sn site, Sn is bonded in a 4-coordinate geometry to two equivalent Ca and four Pt atoms. In the fifth Sn site, Sn is bonded in a 3-coordinate geometry to four Ca, three Pt, and one Sn atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb2Sn5Pt3 by Materials Project

Yb2Pt3Sn5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Yb sites. In the first Yb site, Yb is bonded in a 8-coordinate geometry to two equivalent Pt and six Sn atoms. Both Yb–Pt bond lengths are 3.27 Å. There are a spread of Yb–Sn bond distances ranging from 3.22–3.25 Å. In the second Yb site, Yb is bonded in a 1-coordinate geometry to five Pt and eight Sn atoms. There are a spread of Yb–Pt bond distances ranging from 2.92–3.37 Å. There are a spread of Yb–Sn bond distances ranging from 3.18–3.44 Å. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded in a 7-coordinate geometry to seven Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.76–2.91 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Yb and five Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.68–2.83 Å. In the third Pt site, Pt is bonded in a 9-coordinate geometry to three Yb and six Sn atoms. There are a spread of Pt–Sn bond distances ranging from 2.73–2.94 Å. There are five inequivalent Sn sites. In the first Sn site, Sn is bonded in a 4-coordinate geometry to two equivalent Yb and four Pt atoms. In the second Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Yb and four Pt atoms. In the third Sn site, Sn is bonded in a 6-coordinate geometry to two equivalent Yb and four Pt atoms. In the fourth Sn site, Sn is bonded in a 3-coordinate geometry to four Yb, three Pt, and one Sn atom. The Sn–Sn bond length is 3.09 Å. In the fifth Sn site, Sn is bonded in a 5-coordinate geometry to two equivalent Yb, three equivalent Pt, and one Sn atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ga3Pt5 by Materials Project

Ga3Pt5 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are three inequivalent Pt+1.20- sites. In the first Pt+1.20- site, Pt+1.20- is bonded in a distorted square co-planar geometry to four equivalent Pt+1.20- and four equivalent Ga2+ atoms. All Pt–Pt bond lengths are 2.78 Å. All Pt–Ga bond lengths are 2.65 Å. In the second Pt+1.20- site, Pt+1.20- is bonded to six Pt+1.20- and six Ga2+ atoms to form a mixture of distorted corner and face-sharing PtGa6Pt6 cuboctahedra. All Pt–Pt bond lengths are 2.87 Å. There are four shorter (2.76 Å) and two longer (2.78 Å) Pt–Ga bond lengths. In the third Pt+1.20- site, Pt+1.20- is bonded in a 2-coordinate geometry to four equivalent Pt+1.20- and six Ga2+ atoms. There are two shorter (2.54 Å) and four longer (2.81 Å) Pt–Ga bond lengths. There are two inequivalent Ga2+ sites. In the first Ga2+ site, Ga2+ is bonded in a body-centered cubic geometry to eight Pt+1.20- atoms. In the second Ga2+ site, Ga2+ is bonded in a distorted q6 geometry to ten Pt+1.20- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Zn12Pt7 by Materials Project

Pt7Zn12 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are four inequivalent Pt sites. In the first Pt site, Pt is bonded in a 12-coordinate geometry to ten Zn atoms. There are a spread of Pt–Zn bond distances ranging from 2.63–2.91 Å. In the second Pt site, Pt is bonded in a distorted body-centered cubic geometry to eight Zn atoms. There are four shorter (2.64 Å) and four longer (2.67 Å) Pt–Zn bond lengths. In the third Pt site, Pt is bonded in a 12-coordinate geometry to ten Zn atoms. There are a spread of Pt–Zn bond distances ranging from 2.63–2.81 Å. In the fourth Pt site, Pt is bonded in a 12-coordinate geometry to eight Zn atoms. There are a spread of Pt–Zn bond distances ranging from 2.65–2.69 Å. There are six inequivalent Zn sites. In the first Zn site, Zn is bonded in a 11-coordinate geometry to six Pt and two Zn atoms. There are one shorter (2.69 Å) and one longer (2.73 Å) Zn–Zn bond lengths. In the second Zn site, Zn is bonded in a 11-coordinate geometry to six Pt and one Zn atom. The Zn–Zn bond length is 2.70 Å. In the third Zn site, Zn is bonded in a 11-coordinate geometry to six Pt and five Zn atoms. There are a spread of Zn–Zn bond distances ranging from 2.61–2.80 Å. In the fourth Zn site, Zn is bonded in a 6-coordinate geometry to six Pt and five Zn atoms. There are two shorter (2.80 Å) and one longer (2.94 Å) Zn–Zn bond lengths. In the fifth Zn site, Zn is bonded in a 4-coordinate geometry to four Pt and two Zn atoms. In the sixth Zn site, Zn is bonded in a 11-coordinate geometry to four Pt atoms.

36 MATERIALS SCIENCE↗