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DOE OSTI2020

Materials Data on Li2Sm2Si3 by Materials Project

Li2Sm2Si3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li is bonded to three equivalent Sm and four Si atoms to form a mixture of distorted edge, face, and corner-sharing LiSm3Si4 tetrahedra. All Li–Sm bond lengths are 3.08 Å. There are a spread of Li–Si bond distances ranging from 2.57–2.67 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 9-coordinate geometry to nine Si atoms. There are a spread of Sm–Si bond distances ranging from 3.06–3.21 Å. In the second Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Li and six Si atoms. There are four shorter (3.07 Å) and two longer (3.14 Å) Sm–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 1-coordinate geometry to one Li, six Sm, and two equivalent Si atoms. There are one shorter (2.37 Å) and one longer (2.40 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 6-coordinate geometry to six equivalent Li and three Sm atoms.

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Materials Data on Sm5Ir2 by Materials Project

Sm5Ir2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Sm sites. In the first Sm site, Sm is bonded in a 2-coordinate geometry to three equivalent Ir atoms. There are a spread of Sm–Ir bond distances ranging from 2.82–3.54 Å. In the second Sm site, Sm is bonded to four equivalent Ir atoms to form distorted edge-sharing SmIr4 tetrahedra. There are two shorter (2.95 Å) and two longer (2.99 Å) Sm–Ir bond lengths. In the third Sm site, Sm is bonded in a 3-coordinate geometry to three equivalent Ir atoms. There are a spread of Sm–Ir bond distances ranging from 2.88–3.17 Å. Ir is bonded in a 7-coordinate geometry to eight Sm atoms.

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Materials Data on Sm3Eu by Materials Project

EuSm3 is Magnesium-derived structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Eu is bonded to twelve Sm atoms to form EuSm12 cuboctahedra that share corners with six equivalent EuSm12 cuboctahedra, corners with twelve SmSm8Eu4 cuboctahedra, edges with eighteen SmSm8Eu4 cuboctahedra, faces with eight equivalent EuSm12 cuboctahedra, and faces with twelve SmSm8Eu4 cuboctahedra. There are six shorter (3.69 Å) and six longer (3.70 Å) Eu–Sm bond lengths. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded to four equivalent Eu and eight Sm atoms to form SmSm8Eu4 cuboctahedra that share corners with four equivalent EuSm12 cuboctahedra, corners with fourteen SmSm8Eu4 cuboctahedra, edges with six equivalent EuSm12 cuboctahedra, edges with twelve SmSm8Eu4 cuboctahedra, faces with four equivalent EuSm12 cuboctahedra, and faces with sixteen SmSm8Eu4 cuboctahedra. There are a spread of Sm–Sm bond distances ranging from 3.64–3.77 Å. In the second Sm site, Sm is bonded to four equivalent Eu and eight equivalent Sm atoms to form SmSm8Eu4 cuboctahedra that share corners with four equivalent EuSm12 cuboctahedra, corners with fourteen SmSm8Eu4 cuboctahedra, edges with six equivalent EuSm12 cuboctahedra, edges with twelve equivalent SmSm8Eu4 cuboctahedra, faces with four equivalent EuSm12 cuboctahedra, and faces with sixteen SmSm8Eu4 cuboctahedra.

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Materials Data on Sm5Ru2 by Materials Project

Sm5Ru2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Sm sites. In the first Sm site, Sm is bonded in a 2-coordinate geometry to three equivalent Ru atoms. There are a spread of Sm–Ru bond distances ranging from 2.80–3.48 Å. In the second Sm site, Sm is bonded to four equivalent Ru atoms to form distorted edge-sharing SmRu4 tetrahedra. There are two shorter (2.95 Å) and two longer (3.00 Å) Sm–Ru bond lengths. In the third Sm site, Sm is bonded in a 3-coordinate geometry to three equivalent Ru atoms. There are a spread of Sm–Ru bond distances ranging from 2.87–3.13 Å. Ru is bonded in a 7-coordinate geometry to eight Sm atoms.

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Materials Data on Sm2Mn2Al2Fe13 by Materials Project

Sm2Mn2Fe13Al2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sm is bonded in a 10-coordinate geometry to two equivalent Mn, sixteen Fe, and one Al atom. Both Sm–Mn bond lengths are 3.36 Å. There are a spread of Sm–Fe bond distances ranging from 3.02–3.35 Å. The Sm–Al bond length is 3.12 Å. Mn is bonded in a 10-coordinate geometry to two equivalent Sm, eight Fe, and two equivalent Al atoms. There are a spread of Mn–Fe bond distances ranging from 2.43–2.45 Å. Both Mn–Al bond lengths are 2.59 Å. There are five inequivalent Fe sites. In the first Fe site, Fe is bonded to three equivalent Sm, two equivalent Mn, six Fe, and one Al atom to form a mixture of distorted corner, edge, and face-sharing FeSm3Mn2AlFe6 cuboctahedra. There are a spread of Fe–Fe bond distances ranging from 2.48–2.65 Å. The Fe–Al bond length is 2.60 Å. In the second Fe site, Fe is bonded in a 12-coordinate geometry to three equivalent Sm, one Mn, seven Fe, and one Al atom. There are a spread of Fe–Fe bond distances ranging from 2.43–2.67 Å. The Fe–Al bond length is 2.58 Å. In the third Fe site, Fe is bonded in a 12-coordinate geometry to two equivalent Sm, two equivalent Mn, six Fe, and two equivalent Al atoms. Both Fe–Fe bond lengths are 2.45 Å. Both Fe–Al bond lengths are 2.79 Å. In the fourth Fe site, Fe is bonded in a 12-coordinate geometry to two equivalent Sm, one Mn, seven Fe, and two equivalent Al atoms. There are one shorter (2.46 Å) and one longer (2.47 Å) Fe–Fe bond lengths. There are one shorter (2.74 Å) and one longer (2.77 Å) Fe–Al bond lengths. In the fifth Fe site, Fe is bonded in a 12-coordinate geometry to two equivalent Sm, eight Fe, and two equivalent Al atoms. Both Fe–Al bond lengths are 2.55 Å. Al is bonded in a 4-coordinate geometry to one Sm, two equivalent Mn, ten Fe, and one Al atom. The Al–Al bond length is 2.56 Å.

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Materials Data on Sm2Bi by Materials Project

Sm2Bi crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded to five equivalent Bi atoms to form a mixture of distorted corner and edge-sharing SmBi5 square pyramids. There are one shorter (3.27 Å) and four longer (3.32 Å) Sm–Bi bond lengths. In the second Sm site, Sm is bonded in a 4-coordinate geometry to four equivalent Sm and four equivalent Bi atoms. All Sm–Sm bond lengths are 3.24 Å. All Sm–Bi bond lengths are 3.38 Å. Bi is bonded in a 9-coordinate geometry to nine Sm atoms.

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Materials Data on Sm3(CuGe)4 by Materials Project

Sm3(CuGe)4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded to six Ge atoms to form distorted edge-sharing SmGe6 octahedra. There are four shorter (2.99 Å) and two longer (3.06 Å) Sm–Ge bond lengths. In the second Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Cu and six Ge atoms. There are four shorter (3.04 Å) and two longer (3.12 Å) Sm–Cu bond lengths. There are two shorter (3.06 Å) and four longer (3.12 Å) Sm–Ge bond lengths. Cu is bonded in a 10-coordinate geometry to three equivalent Sm, one Cu, and four Ge atoms. The Cu–Cu bond length is 2.53 Å. There are a spread of Cu–Ge bond distances ranging from 2.53–2.66 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to three Sm and six equivalent Cu atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Sm, two equivalent Cu, and one Ge atom. The Ge–Ge bond length is 2.55 Å.

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Materials Data on Sm4Bi2O by Materials Project

Sm4Bi2O is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a linear geometry to four equivalent Bi and two equivalent O atoms. All Sm–Bi bond lengths are 3.38 Å. Both Sm–O bond lengths are 2.34 Å. In the second Sm site, Sm is bonded to five equivalent Bi and one O atom to form a mixture of distorted edge and corner-sharing SmBi5O octahedra. The corner-sharing octahedra tilt angles range from 0–21°. There are one shorter (3.23 Å) and four longer (3.37 Å) Sm–Bi bond lengths. The Sm–O bond length is 3.05 Å. Bi is bonded in a 9-coordinate geometry to nine Sm atoms. O is bonded to six Sm atoms to form corner-sharing OSm6 octahedra. The corner-sharing octahedral tilt angles are 0°.

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Materials Data on SmZnGe by Materials Project

SmZnGe crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded to six equivalent Zn and six equivalent Ge atoms to form a mixture of distorted edge and face-sharing SmZn6Ge6 cuboctahedra. All Sm–Zn bond lengths are 3.02 Å. All Sm–Ge bond lengths are 3.29 Å. In the second Sm site, Sm is bonded to six equivalent Zn and six equivalent Ge atoms to form a mixture of distorted edge and face-sharing SmZn6Ge6 cuboctahedra. All Sm–Zn bond lengths are 3.38 Å. All Sm–Ge bond lengths are 3.10 Å. Zn is bonded in a 3-coordinate geometry to six Sm and three equivalent Ge atoms. All Zn–Ge bond lengths are 2.51 Å. Ge is bonded in a 3-coordinate geometry to six Sm and three equivalent Zn atoms.

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Materials Data on SmFe10Mo2N by Materials Project

SmMo2Fe10N crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a distorted linear geometry to four equivalent Fe and two equivalent N atoms. All Sm–Fe bond lengths are 2.89 Å. Both Sm–N bond lengths are 2.25 Å. In the second Sm site, Sm is bonded in a distorted linear geometry to four equivalent Fe and two equivalent N atoms. All Sm–Fe bond lengths are 2.89 Å. Both Sm–N bond lengths are 2.25 Å. Mo is bonded in a 12-coordinate geometry to one Mo and ten Fe atoms. The Mo–Mo bond length is 2.69 Å. There are a spread of Mo–Fe bond distances ranging from 2.50–2.85 Å. There are four inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to two equivalent Mo, two equivalent Fe, and one N atom. Both Fe–Fe bond lengths are 2.56 Å. The Fe–N bond length is 1.98 Å. In the second Fe site, Fe is bonded in a single-bond geometry to two equivalent Mo, two equivalent Fe, and one N atom. Both Fe–Fe bond lengths are 2.36 Å. The Fe–N bond length is 1.92 Å. In the third Fe site, Fe is bonded in a 6-coordinate geometry to one Sm, one Mo, and four Fe atoms. There are one shorter (2.27 Å) and two longer (2.37 Å) Fe–Fe bond lengths. In the fourth Fe site, Fe is bonded in a 12-coordinate geometry to four equivalent Mo and five Fe atoms. The Fe–Fe bond length is 2.24 Å. N is bonded to two equivalent Sm and four Fe atoms to form corner-sharing NSm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 0°.

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Materials Data on Li2Sm2Ge3 by Materials Project

Li2Sm2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li is bonded to three equivalent Sm and four Ge atoms to form a mixture of distorted corner, edge, and face-sharing LiSm3Ge4 tetrahedra. There are one shorter (3.11 Å) and two longer (3.15 Å) Li–Sm bond lengths. There are a spread of Li–Ge bond distances ranging from 2.56–2.72 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 5-coordinate geometry to nine Ge atoms. There are a spread of Sm–Ge bond distances ranging from 3.11–3.31 Å. In the second Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Li and six Ge atoms. There are four shorter (3.09 Å) and two longer (3.17 Å) Sm–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Sm, and two equivalent Ge atoms. There are one shorter (2.50 Å) and one longer (2.53 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Li and three Sm atoms.

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Materials Data on KSm3 by Materials Project

KSm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. K is bonded to twelve Sm atoms to form KSm12 cuboctahedra that share corners with four equivalent KSm12 cuboctahedra, corners with eight equivalent SmK4Sm8 cuboctahedra, edges with eight equivalent KSm12 cuboctahedra, edges with sixteen equivalent SmK4Sm8 cuboctahedra, faces with four equivalent KSm12 cuboctahedra, and faces with fourteen SmK4Sm8 cuboctahedra. There are four shorter (3.74 Å) and eight longer (3.80 Å) K–Sm bond lengths. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded to four equivalent K and eight Sm atoms to form SmK4Sm8 cuboctahedra that share corners with twelve equivalent SmK4Sm8 cuboctahedra, edges with eight equivalent KSm12 cuboctahedra, edges with sixteen SmK4Sm8 cuboctahedra, faces with four equivalent KSm12 cuboctahedra, and faces with fourteen SmK4Sm8 cuboctahedra. There are four shorter (3.74 Å) and four longer (3.80 Å) Sm–Sm bond lengths. In the second Sm site, Sm is bonded to four equivalent K and eight equivalent Sm atoms to form distorted SmK4Sm8 cuboctahedra that share corners with four equivalent SmK4Sm8 cuboctahedra, corners with eight equivalent KSm12 cuboctahedra, edges with twenty-four SmK4Sm8 cuboctahedra, faces with six equivalent KSm12 cuboctahedra, and faces with twelve SmK4Sm8 cuboctahedra.

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Materials Data on Sm2Ni17 by Materials Project

Sm2Ni17 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to eighteen Ni atoms. There are a spread of Sm–Ni bond distances ranging from 2.92–3.21 Å. In the second Sm site, Sm is bonded in a 2-coordinate geometry to twenty Ni atoms. There are a spread of Sm–Ni bond distances ranging from 2.85–3.13 Å. There are four inequivalent Ni sites. In the first Ni site, Ni is bonded in a 2-coordinate geometry to one Sm and thirteen Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.35–2.71 Å. In the second Ni site, Ni is bonded to two equivalent Sm and ten Ni atoms to form NiSm2Ni10 cuboctahedra that share corners with fourteen NiSm2Ni10 cuboctahedra, edges with six equivalent NiSm3Ni9 cuboctahedra, and faces with ten NiSm2Ni10 cuboctahedra. There are four shorter (2.39 Å) and four longer (2.41 Å) Ni–Ni bond lengths. In the third Ni site, Ni is bonded in a 12-coordinate geometry to two Sm and ten Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.38–2.54 Å. In the fourth Ni site, Ni is bonded to three Sm and nine Ni atoms to form a mixture of distorted edge, face, and corner-sharing NiSm3Ni9 cuboctahedra. Both Ni–Ni bond lengths are 2.41 Å.

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Materials Data on SmB7IO15 by Materials Project

SmB7O15I crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sm is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Sm–O bond distances ranging from 2.25–2.77 Å. There are seven inequivalent B sites. In the first B site, B is bonded in a trigonal planar geometry to three O atoms. There is two shorter (1.37 Å) and one longer (1.39 Å) B–O bond length. In the second B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.43–1.54 Å. In the third B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.43–1.51 Å. In the fourth B site, B is bonded to four O atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.43–1.51 Å. In the fifth B site, B is bonded in a trigonal planar geometry to three O atoms. All B–O bond lengths are 1.37 Å. In the sixth B site, B is bonded in a trigonal planar geometry to three O atoms. There is one shorter (1.36 Å) and two longer (1.37 Å) B–O bond length. In the seventh B site, B is bonded in a trigonal planar geometry to three O atoms. There are a spread of B–O bond distances ranging from 1.36–1.38 Å. There are fifteen inequivalent O sites. In the first O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one Sm and two B atoms. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one Sm and two B atoms. In the fourth O site, O is bonded in a trigonal planar geometry to three B atoms. In the fifth O site, O is bonded in a bent 120 degrees geometry to one Sm and two B atoms. In the sixth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the seventh O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the eighth O site, O is bonded in a bent 120 degrees geometry to two B atoms. In the ninth O site, O is bonded in a distorted bent 120 degrees geometry to one Sm and two B atoms. In the tenth O site, O is bonded in a bent 120 degrees geometry to one Sm and one I atom. The O–I bond length is 1.96 Å. In the eleventh O site, O is bonded in a distorted bent 120 degrees geometry to one Sm and two B atoms. In the twelfth O site, O is bonded in a single-bond geometry to one Sm atom. In the thirteenth O site, O is bonded in a bent 120 degrees geometry to one Sm and two B atoms. In the fourteenth O site, O is bonded in a bent 120 degrees geometry to one Sm and one I atom. The O–I bond length is 2.23 Å. In the fifteenth O site, O is bonded in a single-bond geometry to one B atom. I is bonded in a 1-coordinate geometry to two O atoms.

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Materials Data on SrSm3 by Materials Project

SrSm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr is bonded to twelve Sm atoms to form SrSm12 cuboctahedra that share corners with four equivalent SrSm12 cuboctahedra, corners with eight equivalent SmSr4Sm8 cuboctahedra, edges with eight equivalent SrSm12 cuboctahedra, edges with sixteen equivalent SmSr4Sm8 cuboctahedra, faces with four equivalent SrSm12 cuboctahedra, and faces with fourteen SmSr4Sm8 cuboctahedra. All Sr–Sm bond lengths are 3.75 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded to four equivalent Sr and eight Sm atoms to form SmSr4Sm8 cuboctahedra that share corners with twelve equivalent SmSr4Sm8 cuboctahedra, edges with eight equivalent SrSm12 cuboctahedra, edges with sixteen SmSr4Sm8 cuboctahedra, faces with four equivalent SrSm12 cuboctahedra, and faces with fourteen SmSr4Sm8 cuboctahedra. All Sm–Sm bond lengths are 3.75 Å. In the second Sm site, Sm is bonded to four equivalent Sr and eight equivalent Sm atoms to form SmSr4Sm8 cuboctahedra that share corners with four equivalent SmSr4Sm8 cuboctahedra, corners with eight equivalent SrSm12 cuboctahedra, edges with twenty-four SmSr4Sm8 cuboctahedra, faces with six equivalent SrSm12 cuboctahedra, and faces with twelve SmSr4Sm8 cuboctahedra.

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Materials Data on Sm3(AgSn)4 by Materials Project

Sm3Ag4Sn4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Ag and six Sn atoms. There are four shorter (3.31 Å) and two longer (3.44 Å) Sm–Ag bond lengths. There are two shorter (3.35 Å) and four longer (3.39 Å) Sm–Sn bond lengths. In the second Sm site, Sm is bonded to six Sn atoms to form distorted edge-sharing SmSn6 octahedra. There are four shorter (3.25 Å) and two longer (3.35 Å) Sm–Sn bond lengths. Ag is bonded in a 12-coordinate geometry to three equivalent Sm, one Ag, and four Sn atoms. The Ag–Ag bond length is 2.88 Å. There are a spread of Ag–Sn bond distances ranging from 2.76–2.88 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 9-coordinate geometry to three Sm and six equivalent Ag atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six Sm, two equivalent Ag, and one Sn atom. The Sn–Sn bond length is 2.88 Å.

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Materials Data on Sm2Co17 by Materials Project

Sm2Co17 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to eighteen Co atoms. There are a spread of Sm–Co bond distances ranging from 2.98–3.27 Å. In the second Sm site, Sm is bonded in a 2-coordinate geometry to twenty Co atoms. There are a spread of Sm–Co bond distances ranging from 2.91–3.16 Å. There are four inequivalent Co sites. In the first Co site, Co is bonded in a 2-coordinate geometry to one Sm and thirteen Co atoms. There are a spread of Co–Co bond distances ranging from 2.32–2.66 Å. In the second Co site, Co is bonded to two equivalent Sm and ten Co atoms to form CoSm2Co10 cuboctahedra that share corners with twenty-two CoSm2Co10 cuboctahedra, edges with ten CoSm3Co9 cuboctahedra, and faces with eighteen CoSm2Co10 cuboctahedra. There are four shorter (2.40 Å) and four longer (2.42 Å) Co–Co bond lengths. In the third Co site, Co is bonded to two Sm and ten Co atoms to form a mixture of distorted edge, face, and corner-sharing CoSm2Co10 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.34–2.58 Å. In the fourth Co site, Co is bonded to three Sm and nine Co atoms to form a mixture of distorted edge, face, and corner-sharing CoSm3Co9 cuboctahedra. Both Co–Co bond lengths are 2.44 Å.

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Materials Data on SmRh3 by Materials Project

SmRh3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to twelve Rh atoms. There are a spread of Sm–Rh bond distances ranging from 3.05–3.35 Å. In the second Sm site, Sm is bonded in a distorted hexagonal planar geometry to eighteen Rh atoms. There are six shorter (3.07 Å) and twelve longer (3.43 Å) Sm–Rh bond lengths. There are four inequivalent Rh sites. In the first Rh site, Rh is bonded to five Sm and seven Rh atoms to form a mixture of distorted corner, edge, and face-sharing RhSm5Rh7 cuboctahedra. There are a spread of Rh–Rh bond distances ranging from 2.65–2.72 Å. In the second Rh site, Rh is bonded in a 12-coordinate geometry to three equivalent Sm and six equivalent Rh atoms. In the third Rh site, Rh is bonded in a 12-coordinate geometry to three equivalent Sm and six equivalent Rh atoms. In the fourth Rh site, Rh is bonded to six equivalent Sm and six equivalent Rh atoms to form RhSm6Rh6 cuboctahedra that share corners with twelve equivalent RhSm5Rh7 cuboctahedra, edges with six equivalent RhSm6Rh6 cuboctahedra, and faces with eighteen equivalent RhSm5Rh7 cuboctahedra.

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