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6 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sm2GeRh3 by Materials Project

Sm2Rh3Ge crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Sm is bonded in a 9-coordinate geometry to four equivalent Sm, nine equivalent Rh, and three equivalent Ge atoms. There are one shorter (3.10 Å) and three longer (3.40 Å) Sm–Sm bond lengths. There are three shorter (2.96 Å) and six longer (3.23 Å) Sm–Rh bond lengths. All Sm–Ge bond lengths are 3.31 Å. Rh is bonded to six equivalent Sm, four equivalent Rh, and two equivalent Ge atoms to form distorted RhSm6Ge2Rh4 cuboctahedra that share corners with four equivalent GeSm6Rh6 cuboctahedra, corners with fourteen equivalent RhSm6Ge2Rh4 cuboctahedra, edges with six equivalent RhSm6Ge2Rh4 cuboctahedra, faces with six equivalent GeSm6Rh6 cuboctahedra, and faces with twelve equivalent RhSm6Ge2Rh4 cuboctahedra. All Rh–Rh bond lengths are 2.84 Å. Both Rh–Ge bond lengths are 2.59 Å. Ge is bonded to six equivalent Sm and six equivalent Rh atoms to form distorted GeSm6Rh6 cuboctahedra that share corners with six equivalent GeSm6Rh6 cuboctahedra, corners with twelve equivalent RhSm6Ge2Rh4 cuboctahedra, edges with six equivalent GeSm6Rh6 cuboctahedra, and faces with eighteen equivalent RhSm6Ge2Rh4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm(GeRh)2 by Materials Project

Sm(RhGe)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sm is bonded in a 8-coordinate geometry to eight equivalent Rh and eight equivalent Ge atoms. All Sm–Rh bond lengths are 3.35 Å. All Sm–Ge bond lengths are 3.22 Å. Rh is bonded to four equivalent Sm and four equivalent Ge atoms to form a mixture of distorted corner, edge, and face-sharing RhSm4Ge4 tetrahedra. All Rh–Ge bond lengths are 2.47 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Sm, four equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.58 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm2Ge2Rh by Materials Project

Sm2RhGe2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 11-coordinate geometry to four equivalent Rh and seven Ge atoms. There are a spread of Sm–Rh bond distances ranging from 3.08–3.36 Å. There are a spread of Sm–Ge bond distances ranging from 3.06–3.36 Å. In the second Sm site, Sm is bonded in a 8-coordinate geometry to two equivalent Rh and six Ge atoms. Both Sm–Rh bond lengths are 3.11 Å. There are a spread of Sm–Ge bond distances ranging from 3.09–3.17 Å. Rh is bonded in a 10-coordinate geometry to six Sm and four Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.54–2.74 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 10-coordinate geometry to six Sm, three equivalent Rh, and one Ge atom. The Ge–Ge bond length is 2.86 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to seven Sm, one Rh, and one Ge atom. The Ge–Ge bond length is 2.66 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm(Ge2Rh3)2 by Materials Project

Sm(Rh3Ge2)2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Sm is bonded to six equivalent Rh and six equivalent Ge atoms to form face-sharing SmGe6Rh6 cuboctahedra. All Sm–Rh bond lengths are 3.17 Å. All Sm–Ge bond lengths are 3.14 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 Sm and four Ge atoms. There are two shorter (2.49 Å) and two longer (2.56 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 Sm and six Rh atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm2Ge5Rh3 by Materials Project

Sm2Rh3Ge5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Sm is bonded in a 1-coordinate geometry to eight Ge atoms. There are a spread of Sm–Ge bond distances ranging from 3.03–3.32 Å. There are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.52–2.73 Å. In the second Rh site, Rh is bonded in a 5-coordinate geometry to five Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.42–2.53 Å. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Sm, three Rh, and two Ge atoms. Both Ge–Ge bond lengths are 2.69 Å. In the second Ge site, Ge is bonded in a 3-coordinate geometry to three Rh and two equivalent Ge atoms. In the third Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Sm and four equivalent Rh atoms. In the fourth Ge site, Ge is bonded in a 2-coordinate geometry to four equivalent Sm, three Rh, and two equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SmGeRh by Materials Project

SmRhGe crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sm is bonded in a 12-coordinate geometry to six equivalent Rh and six equivalent Ge atoms. There are a spread of Sm–Rh bond distances ranging from 2.97–3.30 Å. There are a spread of Sm–Ge bond distances ranging from 3.10–3.19 Å. Rh is bonded in a 10-coordinate geometry to six equivalent Sm and four equivalent Ge atoms. There are a spread of Rh–Ge bond distances ranging from 2.58–2.72 Å. Ge is bonded in a 10-coordinate geometry to six equivalent Sm and four equivalent Rh atoms.

36 MATERIALS SCIENCE↗