Materials Data on Sm2Ge5Pt3 by Materials Project

Sm2Pt3Ge5 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. Sm is bonded in a 1-coordinate geometry to seven Pt and ten Ge atoms. There are a spread of Sm–Pt bond distances ranging from 3.19–3.55 Å. There are a spread of Sm–Ge bond distances ranging from 3.04–3.40 Å. There are two inequivalent Pt sites. In the first Pt site, Pt is bonded in a 6-coordinate geometry to four equivalent Sm and six Ge atoms. There are four shorter (2.57 Å) and two longer (2.71 Å) Pt–Ge bond lengths. In the second Pt site, Pt is bonded in a 10-coordinate geometry to five equivalent Sm and five Ge atoms. There are a spread of Pt–Ge bond distances ranging from 2.44–2.55 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to four equivalent Sm and four equivalent Pt atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Sm, three Pt, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.68 Å. In the third Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Sm, three Pt, and two equivalent Ge atoms.