Materials Data on Y7(TeAu)2 by Materials Project

Abstract

Y7(AuTe)2 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are four inequivalent Y sites. In the first Y site, Y is bonded to two equivalent Au and three Te atoms to form a mixture of distorted corner, edge, and face-sharing YTe3Au2 trigonal bipyramids. Both Y–Au bond lengths are 2.97 Å. There are one shorter (3.13 Å) and two longer (3.21 Å) Y–Te bond lengths. In the second Y site, Y is bonded in a 4-coordinate geometry to three equivalent Au and one Te atom. There are two shorter (2.94 Å) and one longer (3.21 Å) Y–Au bond lengths. The Y–Te bond length is 3.19 Å. In the third Y site, Y is bonded in a 4-coordinate geometry to two equivalent Au and two equivalent Te atoms. Both Y–Au bond lengths are 3.01 Å. Both Y–Te bond lengths are 3.15 Å. In the fourth Y site, Y is bonded in a 5-coordinate geometry to three Te atoms. There are two shorter (3.26 Å) and one longer (3.34 Å) Y–Te bond lengths. Au is bonded in a 7-coordinate geometry to seven Y atoms. There are two inequivalent Te sites. In the first Te site, Te is bonded in a 8-coordinate geometry to eight Y atoms. In the second Te site, Te is bonded in a 7-coordinate geometry to seven Y atoms.