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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Tm3(CuSn)4 by Materials Project

Tm3Cu4Sn4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 12-coordinate geometry to six Cu and six Sn atoms. There are a spread of Tm–Cu bond distances ranging from 2.97–3.13 Å. There are four shorter (3.16 Å) and two longer (3.17 Å) Tm–Sn bond lengths. In the second Tm site, Tm is bonded in a 6-coordinate geometry to four Cu and six Sn atoms. There are two shorter (3.21 Å) and two longer (3.25 Å) Tm–Cu bond lengths. There are two shorter (2.85 Å) and four longer (3.13 Å) Tm–Sn bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 10-coordinate geometry to four Tm, two equivalent Cu, and four Sn atoms. Both Cu–Cu bond lengths are 2.62 Å. There are a spread of Cu–Sn bond distances ranging from 2.67–2.88 Å. In the second Cu site, Cu is bonded in a 10-coordinate geometry to four Tm, two equivalent Cu, and four Sn atoms. Both Cu–Cu bond lengths are 2.67 Å. There are a spread of Cu–Sn bond distances ranging from 2.69–2.89 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a distorted q6 geometry to four Tm and six Cu atoms. In the second Sn site, Sn is bonded in a 8-coordinate geometry to five Tm, two Cu, and one Sn atom. The Sn–Sn bond length is 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3(CuSn)4 by Materials Project

Tm3Cu4Sn4 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded to six Sn atoms to form distorted edge-sharing TmSn6 octahedra. There are four shorter (3.02 Å) and two longer (3.14 Å) Tm–Sn bond lengths. In the second Tm site, Tm is bonded in a 12-coordinate geometry to six equivalent Cu and six Sn atoms. There are two shorter (3.14 Å) and four longer (3.17 Å) Tm–Cu bond lengths. There are two shorter (3.15 Å) and four longer (3.24 Å) Tm–Sn bond lengths. Cu is bonded in a 12-coordinate geometry to three equivalent Tm, one Cu, and four Sn atoms. The Cu–Cu bond length is 2.60 Å. There are a spread of Cu–Sn bond distances ranging from 2.62–2.69 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 9-coordinate geometry to three Tm and six equivalent Cu atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six Tm, two equivalent Cu, and one Sn atom. The Sn–Sn bond length is 2.84 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm3(CuSn)4 by Materials Project

Tm3Cu4Sn4 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded to four equivalent Cu and six Sn atoms to form distorted face-sharing TmCu4Sn6 octahedra. All Tm–Cu bond lengths are 3.45 Å. There are four shorter (3.02 Å) and two longer (3.15 Å) Tm–Sn bond lengths. In the second Tm site, Tm is bonded in a 12-coordinate geometry to six Cu and seven Sn atoms. There are a spread of Tm–Cu bond distances ranging from 3.06–3.30 Å. There are a spread of Tm–Sn bond distances ranging from 3.16–3.50 Å. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent Tm, one Cu, and four Sn atoms. The Cu–Cu bond length is 2.65 Å. There are one shorter (2.62 Å) and three longer (2.69 Å) Cu–Sn bond lengths. In the second Cu site, Cu is bonded in a 10-coordinate geometry to five Tm, one Cu, and four Sn atoms. There are a spread of Cu–Sn bond distances ranging from 2.60–2.73 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 9-coordinate geometry to four Tm and six Cu atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six Tm, two Cu, and one Sn atom. The Sn–Sn bond length is 2.82 Å.

36 MATERIALS SCIENCE↗