Materials Data on ErAgSn by Materials Project

Abstract

ErAgSn crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Er is bonded in a 11-coordinate geometry to six equivalent Ag and five Sn atoms. There are two shorter (3.27 Å) and four longer (3.56 Å) Er–Ag bond lengths. There are four shorter (3.14 Å) and one longer (3.18 Å) Er–Sn bond lengths. Ag is bonded to six equivalent Er, two equivalent Ag, and four Sn atoms to form a mixture of distorted face, edge, and corner-sharing AgEr6Ag2Sn4 cuboctahedra. Both Ag–Ag bond lengths are 3.15 Å. There are two shorter (2.84 Å) and two longer (2.89 Å) Ag–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 9-coordinate geometry to three equivalent Er and six equivalent Ag atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to six equivalent Er and three equivalent Ag atoms.