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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SrCuSn2 by Materials Project

SrCuSn2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to four equivalent Cu and ten Sn atoms. All Sr–Cu bond lengths are 3.51 Å. There are a spread of Sr–Sn bond distances ranging from 3.50–3.76 Å. Cu is bonded in a 9-coordinate geometry to four equivalent Sr and five Sn atoms. There are a spread of Cu–Sn bond distances ranging from 2.58–2.75 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Sr and four equivalent Cu atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six equivalent Sr, one Cu, and two equivalent Sn atoms. Both Sn–Sn bond lengths are 2.85 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(Cu2Sn)2 by Materials Project

SrCu4Sn2 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to eight equivalent Cu and eight equivalent Sn atoms. All Sr–Cu bond lengths are 3.27 Å. All Sr–Sn bond lengths are 3.65 Å. Cu is bonded in a 9-coordinate geometry to two equivalent Sr, three equivalent Cu, and four equivalent Sn atoms. There are one shorter (2.52 Å) and two longer (2.63 Å) Cu–Cu bond lengths. There are a spread of Cu–Sn bond distances ranging from 2.67–2.75 Å. Sn is bonded in a 12-coordinate geometry to four equivalent Sr and eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sr(CuSn)2 by Materials Project

SrCu2Sn2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sr is bonded in a 10-coordinate geometry to six equivalent Cu and eight equivalent Sn atoms. There are two shorter (3.22 Å) and four longer (3.38 Å) Sr–Cu bond lengths. There are four shorter (3.53 Å) and four longer (3.72 Å) Sr–Sn bond lengths. Cu is bonded in a 9-coordinate geometry to three equivalent Sr, two equivalent Cu, and four equivalent Sn atoms. Both Cu–Cu bond lengths are 2.59 Å. There are a spread of Cu–Sn bond distances ranging from 2.64–2.70 Å. Sn is bonded in a 9-coordinate geometry to four equivalent Sr, four equivalent Cu, and one Sn atom. The Sn–Sn bond length is 3.15 Å.

36 MATERIALS SCIENCE↗