Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ge”

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 1,639 records · Page 91

Materials Data on SmGe5 by Materials Project

SmGe5 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Sm is bonded in a 10-coordinate geometry to fourteen Ge atoms. There are a spread of Sm–Ge bond distances ranging from 3.10–3.53 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to three equivalent Sm and five Ge atoms. There are a spread of Ge–Ge bond distances ranging from 2.58–2.93 Å. In the second Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Sm and eight equivalent Ge atoms.

36 MATERIALS SCIENCE↗

Materials Data on UCoNiGe2 by Materials Project

UCoNiGe2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to four equivalent Co, four equivalent Ni, and eight Ge atoms. All U–Co bond lengths are 3.02 Å. All U–Ni bond lengths are 3.20 Å. There are four shorter (3.08 Å) and four longer (3.21 Å) U–Ge bond lengths. Co is bonded in a 4-coordinate geometry to four equivalent U and four equivalent Ge atoms. All Co–Ge bond lengths are 2.40 Å. Ni is bonded in a 5-coordinate geometry to four equivalent U and five Ge atoms. There are one shorter (2.28 Å) and four longer (2.36 Å) Ni–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent U, four equivalent Co, and one Ni atom. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent U and four equivalent Ni atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ge3Mo by Materials Project

MoGe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Mo is bonded to twelve Ge atoms to form MoGe12 cuboctahedra that share corners with four equivalent MoGe12 cuboctahedra, corners with eight equivalent GeGe8Mo4 cuboctahedra, edges with eight equivalent MoGe12 cuboctahedra, edges with sixteen equivalent GeGe8Mo4 cuboctahedra, faces with four equivalent MoGe12 cuboctahedra, and faces with fourteen GeGe8Mo4 cuboctahedra. There are four shorter (2.82 Å) and eight longer (2.91 Å) Mo–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Mo and eight Ge atoms to form GeGe8Mo4 cuboctahedra that share corners with twelve equivalent GeGe8Mo4 cuboctahedra, edges with eight equivalent MoGe12 cuboctahedra, edges with sixteen GeGe8Mo4 cuboctahedra, faces with four equivalent MoGe12 cuboctahedra, and faces with fourteen GeGe8Mo4 cuboctahedra. There are four shorter (2.82 Å) and four longer (2.91 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded to four equivalent Mo and eight equivalent Ge atoms to form GeGe8Mo4 cuboctahedra that share corners with four equivalent GeGe8Mo4 cuboctahedra, corners with eight equivalent MoGe12 cuboctahedra, edges with twenty-four GeGe8Mo4 cuboctahedra, faces with six equivalent MoGe12 cuboctahedra, and faces with twelve GeGe8Mo4 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on U3Al2Ge3 by Materials Project

U3Al2Ge3 crystallizes in the tetragonal I4cm 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 three equivalent Al and five Ge atoms. There are one shorter (3.09 Å) and two longer (3.10 Å) U–Al bond lengths. There are a spread of U–Ge bond distances ranging from 2.93–3.16 Å. In the second U site, U is bonded in a 6-coordinate geometry to four equivalent Al and six Ge atoms. All U–Al bond lengths are 3.14 Å. There are a spread of U–Ge bond distances ranging from 2.76–2.97 Å. Al is bonded in a 3-coordinate geometry to five U and three equivalent Ge atoms. There are two shorter (2.63 Å) and one longer (2.69 Å) Al–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to five U and three equivalent Al atoms. In the second Ge site, Ge is bonded to six U atoms to form corner-sharing GeU6 octahedra. The corner-sharing octahedra tilt angles range from 0–42°.

36 MATERIALS SCIENCE↗

Materials Data on Tm3(GeRh)2 by Materials Project

Tm3(RhGe)2 crystallizes in the orthorhombic Pbcm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 9-coordinate geometry to four equivalent Rh and five Ge atoms. There are two shorter (2.99 Å) and two longer (3.02 Å) Tm–Rh bond lengths. There are a spread of Tm–Ge bond distances ranging from 2.96–3.28 Å. In the second Tm site, Tm is bonded in a 7-coordinate geometry to four equivalent Rh and five Ge atoms. There are a spread of Tm–Rh bond distances ranging from 2.87–3.10 Å. There are a spread of Tm–Ge bond distances ranging from 2.96–3.33 Å. Rh is bonded in a 9-coordinate geometry to six Tm and three Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.53–2.59 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to seven Tm and two equivalent Rh atoms. In the second Ge site, Ge is bonded in a 12-coordinate geometry to eight Tm and four equivalent Rh atoms.

36 MATERIALS SCIENCE↗

Materials Data on Ce(Ge2Rh3)2 by Materials Project

Ce(Rh3Ge2)2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ce is bonded to six equivalent Rh and six equivalent Ge atoms to form face-sharing CeGe6Rh6 cuboctahedra. All Ce–Rh bond lengths are 3.16 Å. All Ce–Ge bond lengths are 3.15 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 5-coordinate geometry to five Ge atoms. There are one shorter (2.50 Å) and four longer (2.57 Å) Rh–Ge bond lengths. In the second Rh site, Rh is bonded in a 6-coordinate geometry to two equivalent Ce and four Ge atoms. There are two shorter (2.49 Å) and two longer (2.57 Å) Rh–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to nine Rh atoms. In the second Ge site, Ge is bonded in a 8-coordinate geometry to two equivalent Ce and six Rh atoms.

36 MATERIALS SCIENCE↗

Materials Data on Zr3GeMo8 by Materials Project

Zr3Mo8Ge is Hexagonal Laves-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are three inequivalent Zr sites. In the first Zr site, Zr is bonded in a 12-coordinate geometry to twelve Mo atoms. There are a spread of Zr–Mo bond distances ranging from 3.14–3.16 Å. In the second Zr site, Zr is bonded in a 9-coordinate geometry to twelve Mo and one Ge atom. There are a spread of Zr–Mo bond distances ranging from 3.13–3.20 Å. The Zr–Ge bond length is 3.22 Å. In the third Zr site, Zr is bonded in a 12-coordinate geometry to twelve Mo and three equivalent Ge atoms. There are a spread of Zr–Mo bond distances ranging from 3.07–3.14 Å. All Zr–Ge bond lengths are 3.26 Å. There are four inequivalent Mo sites. In the first Mo site, Mo is bonded to four Zr, six Mo, and two equivalent Ge atoms to form a mixture of corner, edge, and face-sharing MoZr4Ge2Mo6 cuboctahedra. There are a spread of Mo–Mo bond distances ranging from 2.66–2.70 Å. Both Mo–Ge bond lengths are 3.12 Å. In the second Mo site, Mo is bonded to five Zr, six Mo, and one Ge atom to form a mixture of corner, edge, and face-sharing MoZr5GeMo6 cuboctahedra. There are a spread of Mo–Mo bond distances ranging from 2.63–2.69 Å. The Mo–Ge bond length is 3.09 Å. In the third Mo site, Mo is bonded to three equivalent Zr, six Mo, and three equivalent Ge atoms to form MoZr3Ge3Mo6 cuboctahedra that share corners with eighteen MoZr4Ge2Mo6 cuboctahedra, edges with six equivalent MoZr3Ge3Mo6 cuboctahedra, and faces with eighteen MoZr4Ge2Mo6 cuboctahedra. All Mo–Ge bond lengths are 3.14 Å. In the fourth Mo site, Mo is bonded to six Zr and six Mo atoms to form MoZr6Mo6 cuboctahedra that share corners with eighteen MoZr3Ge3Mo6 cuboctahedra, edges with six equivalent MoZr6Mo6 cuboctahedra, and faces with eighteen MoZr4Ge2Mo6 cuboctahedra. Ge is bonded in a 4-coordinate geometry to four Zr and twelve Mo atoms.

36 MATERIALS SCIENCE↗

Materials Data on Nd(GePt)2 by Materials Project

Nd(PtGe)2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Nd is bonded in a 12-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of Nd–Pt bond distances ranging from 3.29–3.44 Å. There are a spread of Nd–Ge bond distances ranging from 3.26–3.41 Å. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Nd and five Ge atoms. There are one shorter (2.47 Å) and four longer (2.53 Å) Pt–Ge bond lengths. In the second Pt site, Pt is bonded in a 4-coordinate geometry to four equivalent Nd and four equivalent Ge atoms. There are one shorter (2.56 Å) and three longer (2.57 Å) Pt–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Nd and five Pt atoms. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Nd and four equivalent Pt atoms.

36 MATERIALS SCIENCE↗

Materials Data on Dy(GePt)2 by Materials Project

Dy(PtGe)2 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. Dy is bonded in a 12-coordinate geometry to eight Pt and eight Ge atoms. There are a spread of Dy–Pt bond distances ranging from 3.21–3.35 Å. There are a spread of Dy–Ge bond distances ranging from 3.13–3.48 Å. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Dy and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.43–2.54 Å. In the second Pt site, Pt is bonded to four equivalent Dy and four equivalent Ge atoms to form distorted PtDy4Ge4 tetrahedra that share corners with twelve equivalent GeDy4Pt4 tetrahedra, edges with two equivalent GeDy4Pt4 tetrahedra, edges with four equivalent PtDy4Ge4 tetrahedra, and faces with four equivalent PtDy4Ge4 tetrahedra. There are a spread of Pt–Ge bond distances ranging from 2.55–2.57 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Dy and five Pt atoms. In the second Ge site, Ge is bonded to four equivalent Dy and four equivalent Pt atoms to form distorted GeDy4Pt4 tetrahedra that share corners with twelve equivalent PtDy4Ge4 tetrahedra, edges with two equivalent PtDy4Ge4 tetrahedra, edges with four equivalent GeDy4Pt4 tetrahedra, and faces with four equivalent GeDy4Pt4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on U(GeIr)2 by Materials Project

UIr2Ge2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to eight Ir and eight Ge atoms. There are four shorter (3.18 Å) and four longer (3.36 Å) U–Ir bond lengths. There are four shorter (3.23 Å) and four longer (3.24 Å) U–Ge bond lengths. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded to four equivalent U and four equivalent Ge atoms to form distorted IrU4Ge4 tetrahedra that share corners with twelve equivalent GeU4Ir4 tetrahedra, edges with two equivalent GeU4Ir4 tetrahedra, edges with four equivalent IrU4Ge4 tetrahedra, and faces with four equivalent IrU4Ge4 tetrahedra. All Ir–Ge bond lengths are 2.50 Å. In the second Ir site, Ir is bonded in a 9-coordinate geometry to four equivalent U and five Ge atoms. There are one shorter (2.40 Å) and four longer (2.49 Å) Ir–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent U and four equivalent Ir atoms to form distorted GeU4Ir4 tetrahedra that share corners with twelve equivalent IrU4Ge4 tetrahedra, edges with two equivalent IrU4Ge4 tetrahedra, edges with four equivalent GeU4Ir4 tetrahedra, and faces with four equivalent GeU4Ir4 tetrahedra. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent U and five Ir atoms.

36 MATERIALS SCIENCE↗

Materials Data on U3Ga2Ge3 by Materials Project

U3Ga2Ge3 crystallizes in the tetragonal I4cm 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 three equivalent Ga and five Ge atoms. There are one shorter (3.04 Å) and two longer (3.08 Å) U–Ga bond lengths. There are a spread of U–Ge bond distances ranging from 2.94–3.13 Å. In the second U site, U is bonded in a 2-coordinate geometry to four equivalent Ga and six Ge atoms. All U–Ga bond lengths are 3.13 Å. There are two shorter (2.77 Å) and four longer (3.00 Å) U–Ge bond lengths. Ga is bonded in a 8-coordinate geometry to five U and three equivalent Ge atoms. There are two shorter (2.66 Å) and one longer (2.72 Å) Ga–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to five U and three equivalent Ga atoms. In the second Ge site, Ge is bonded to six U atoms to form corner-sharing GeU6 octahedra. The corner-sharing octahedra tilt angles range from 0–42°.

36 MATERIALS SCIENCE↗

Materials Data on AgGe3 by Materials Project

AgGe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ag is bonded to twelve Ge atoms to form AgGe12 cuboctahedra that share corners with four equivalent AgGe12 cuboctahedra, corners with eight equivalent GeAg4Ge8 cuboctahedra, edges with eight equivalent AgGe12 cuboctahedra, edges with sixteen equivalent GeAg4Ge8 cuboctahedra, faces with four equivalent AgGe12 cuboctahedra, and faces with fourteen GeAg4Ge8 cuboctahedra. There are four shorter (2.97 Å) and eight longer (3.07 Å) Ag–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Ag and eight Ge atoms to form GeAg4Ge8 cuboctahedra that share corners with twelve equivalent GeAg4Ge8 cuboctahedra, edges with eight equivalent AgGe12 cuboctahedra, edges with sixteen GeAg4Ge8 cuboctahedra, faces with four equivalent AgGe12 cuboctahedra, and faces with fourteen GeAg4Ge8 cuboctahedra. There are four shorter (2.97 Å) and four longer (3.07 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded to four equivalent Ag and eight equivalent Ge atoms to form distorted GeAg4Ge8 cuboctahedra that share corners with four equivalent GeAg4Ge8 cuboctahedra, corners with eight equivalent AgGe12 cuboctahedra, edges with twenty-four GeAg4Ge8 cuboctahedra, faces with six equivalent AgGe12 cuboctahedra, and faces with twelve GeAg4Ge8 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Ce12Sn5Ge3 by Materials Project

Ce12Sn5Ge3 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are three inequivalent Ce sites. In the first Ce site, Ce is bonded to two equivalent Sn and three equivalent Ge atoms to form a mixture of distorted corner and edge-sharing CeSn2Ge3 trigonal bipyramids. Both Ce–Sn bond lengths are 3.24 Å. There are two shorter (3.44 Å) and one longer (3.59 Å) Ce–Ge bond lengths. In the second Ce site, Ce is bonded in a 4-coordinate geometry to four equivalent Sn and two equivalent Ge atoms. There are two shorter (3.08 Å) and two longer (3.85 Å) Ce–Sn bond lengths. Both Ce–Ge bond lengths are 3.06 Å. In the third Ce site, Ce is bonded in a 6-coordinate geometry to four Sn and two Ge atoms. There are three shorter (3.30 Å) and one longer (3.37 Å) Ce–Sn bond lengths. There are one shorter (3.09 Å) and one longer (3.12 Å) Ce–Ge bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a body-centered cubic geometry to eight equivalent Ce atoms. In the second Sn site, Sn is bonded in a 10-coordinate geometry to nine Ce and one Sn atom. The Sn–Sn bond length is 2.98 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to eight equivalent Ce atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to nine Ce atoms.

36 MATERIALS SCIENCE↗

Materials Data on MgGe3 by Materials Project

MgGe3 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. Mg is bonded in a 10-coordinate geometry to ten Ge atoms. There are a spread of Mg–Ge bond distances ranging from 2.75–3.18 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to three equivalent Mg and five Ge atoms. There are one shorter (2.59 Å) and four longer (2.83 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 6-coordinate geometry to four equivalent Mg and two equivalent Ge atoms.

36 MATERIALS SCIENCE↗

Materials Data on Li3Ag3Ge2 by Materials Project

Li3Ag3Ge2 crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded to six Ag and four equivalent Ge atoms to form distorted LiAg6Ge4 cuboctahedra that share corners with four equivalent AgLi8Ge4 cuboctahedra, corners with four equivalent GeLi6Ag6 cuboctahedra, corners with ten equivalent LiAg6Ge4 cuboctahedra, edges with four equivalent GeLi6Ag6 cuboctahedra, edges with five LiAg6Ge4 cuboctahedra, edges with ten AgLi4Ag4Ge4 cuboctahedra, faces with four AgLi4Ag4Ge4 cuboctahedra, faces with four equivalent GeLi6Ag6 cuboctahedra, and faces with seven LiAg6Ge4 cuboctahedra. There are a spread of Li–Ag bond distances ranging from 2.83–2.85 Å. All Li–Ge bond lengths are 2.87 Å. In the second Li site, Li is bonded to four equivalent Ag and four equivalent Ge atoms to form distorted LiAg4Ge4 cuboctahedra that share corners with four equivalent LiAg4Ge4 cuboctahedra, corners with eight equivalent GeLi6Ag6 cuboctahedra, corners with twelve AgLi4Ag4Ge4 cuboctahedra, edges with four equivalent GeLi6Ag6 cuboctahedra, edges with six AgLi4Ag4Ge4 cuboctahedra, edges with ten LiAg6Ge4 cuboctahedra, and faces with six LiAg6Ge4 cuboctahedra. All Li–Ag bond lengths are 2.87 Å. All Li–Ge bond lengths are 2.83 Å. There are three inequivalent Ag sites. In the first Ag site, Ag is bonded to four equivalent Li, four equivalent Ag, and four equivalent Ge atoms to form distorted AgLi4Ag4Ge4 cuboctahedra that share corners with four equivalent LiAg4Ge4 cuboctahedra, corners with four equivalent AgLi4Ag4Ge4 cuboctahedra, edges with eight equivalent AgLi8Ge4 cuboctahedra, edges with eight equivalent GeLi6Ag6 cuboctahedra, edges with ten LiAg6Ge4 cuboctahedra, faces with four equivalent LiAg6Ge4 cuboctahedra, faces with four equivalent GeLi6Ag6 cuboctahedra, and faces with eight AgLi4Ag4Ge4 cuboctahedra. All Ag–Ag bond lengths are 2.87 Å. All Ag–Ge bond lengths are 2.84 Å. In the second Ag site, Ag is bonded to eight Li and four equivalent Ge atoms to form AgLi8Ge4 cuboctahedra that share corners with eight equivalent LiAg6Ge4 cuboctahedra, corners with twelve AgLi8Ge4 cuboctahedra, edges with eight LiAg6Ge4 cuboctahedra, edges with eight equivalent AgLi4Ag4Ge4 cuboctahedra, edges with eight equivalent GeLi6Ag6 cuboctahedra, faces with four equivalent GeLi6Ag6 cuboctahedra, and faces with six AgLi8Ge4 cuboctahedra. All Ag–Ge bond lengths are 2.84 Å. In the third Ag site, Ag is bonded to four equivalent Li, four equivalent Ag, and four equivalent Ge atoms to form distorted AgLi4Ag4Ge4 cuboctahedra that share corners with eight equivalent LiAg4Ge4 cuboctahedra, corners with twelve AgLi8Ge4 cuboctahedra, edges with eight equivalent LiAg6Ge4 cuboctahedra, edges with eight equivalent GeLi6Ag6 cuboctahedra, faces with four equivalent LiAg6Ge4 cuboctahedra, faces with four equivalent GeLi6Ag6 cuboctahedra, and faces with ten AgLi4Ag4Ge4 cuboctahedra. All Ag–Ge bond lengths are 2.85 Å. Ge is bonded to six Li and six Ag atoms to form GeLi6Ag6 cuboctahedra that share corners with eight LiAg6Ge4 cuboctahedra, corners with twelve equivalent GeLi6Ag6 cuboctahedra, edges with six LiAg6Ge4 cuboctahedra, edges with twelve AgLi4Ag4Ge4 cuboctahedra, faces with four equivalent LiAg6Ge4 cuboctahedra, faces with six AgLi4Ag4Ge4 cuboctahedra, and faces with six equivalent GeLi6Ag6 cuboctahedra.

36 MATERIALS SCIENCE↗

Materials Data on Ge3Au by Materials Project

AuGe3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Au is bonded to twelve Ge atoms to form AuGe12 cuboctahedra that share corners with four equivalent AuGe12 cuboctahedra, edges with eight equivalent AuGe12 cuboctahedra, edges with sixteen equivalent GeGe8Au4 cuboctahedra, faces with four equivalent AuGe12 cuboctahedra, and faces with eight equivalent GeGe8Au4 cuboctahedra. There are four shorter (2.95 Å) and eight longer (3.07 Å) Au–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Au and eight Ge atoms to form distorted GeGe8Au4 cuboctahedra that share corners with twelve equivalent GeGe8Au4 cuboctahedra, edges with eight equivalent AuGe12 cuboctahedra, edges with eight equivalent GeGe8Au4 cuboctahedra, faces with four equivalent AuGe12 cuboctahedra, and faces with ten equivalent GeGe8Au4 cuboctahedra. There are four shorter (2.95 Å) and four longer (3.07 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a square co-planar geometry to four equivalent Au and eight equivalent Ge atoms.

36 MATERIALS SCIENCE↗

Materials Data on Th(GePt)2 by Materials Project

Th(PtGe)2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Th is bonded in a 12-coordinate geometry to eight Pt and eight Ge atoms. There are four shorter (3.32 Å) and four longer (3.36 Å) Th–Pt bond lengths. There are four shorter (3.29 Å) and four longer (3.39 Å) Th–Ge bond lengths. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a 4-coordinate geometry to four equivalent Th and four equivalent Ge atoms. All Pt–Ge bond lengths are 2.58 Å. In the second Pt site, Pt is bonded in a 9-coordinate geometry to four equivalent Th and five Ge atoms. There are one shorter (2.46 Å) and four longer (2.53 Å) Pt–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Th and four equivalent Pt atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Th and five Pt atoms.

36 MATERIALS SCIENCE↗

Materials Data on AlGe3 by Materials Project

AlGe3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Al is bonded to twelve Ge atoms to form AlGe12 cuboctahedra that share corners with four equivalent AlGe12 cuboctahedra, edges with eight equivalent AlGe12 cuboctahedra, edges with sixteen equivalent GeAl4Ge8 cuboctahedra, faces with four equivalent AlGe12 cuboctahedra, and faces with eight equivalent GeAl4Ge8 cuboctahedra. There are four shorter (2.86 Å) and eight longer (3.05 Å) Al–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Al and eight Ge atoms to form distorted GeAl4Ge8 cuboctahedra that share corners with twelve equivalent GeAl4Ge8 cuboctahedra, edges with eight equivalent AlGe12 cuboctahedra, edges with eight equivalent GeAl4Ge8 cuboctahedra, faces with four equivalent AlGe12 cuboctahedra, and faces with ten equivalent GeAl4Ge8 cuboctahedra. There are four shorter (2.86 Å) and four longer (3.05 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a square co-planar geometry to four equivalent Al and eight equivalent Ge atoms.

36 MATERIALS SCIENCE↗