Materials Data on Lu6CuTe2 by Materials Project
Lu6CuTe2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are six inequivalent Lu sites. In the first Lu site, Lu is bonded in a 4-coordinate geometry to four Te atoms. There are two shorter (3.08 Å) and two longer (3.09 Å) Lu–Te bond lengths. In the second Lu site, Lu is bonded in a 5-coordinate geometry to three equivalent Cu and two equivalent Te atoms. There are two shorter (2.91 Å) and one longer (3.10 Å) Lu–Cu bond lengths. Both Lu–Te bond lengths are 3.18 Å. In the third Lu site, Lu is bonded in a 3-coordinate geometry to two equivalent Cu and one Te atom. Both Lu–Cu bond lengths are 2.86 Å. The Lu–Te bond length is 3.20 Å. In the fourth Lu site, Lu is bonded in a 4-coordinate geometry to one Cu and four Te atoms. The Lu–Cu bond length is 3.47 Å. There are a spread of Lu–Te bond distances ranging from 3.03–3.26 Å. In the fifth Lu site, Lu is bonded to two equivalent Cu and three Te atoms to form distorted edge-sharing LuCu2Te3 trigonal bipyramids. Both Lu–Cu bond lengths are 2.84 Å. There are one shorter (3.04 Å) and two longer (3.12 Å) Lu–Te bond lengths. In the sixth Lu site, Lu is bonded in a 1-coordinate geometry to one Cu and one Te atom. The Lu–Cu bond length is 3.34 Å. The Lu–Te bond length is 3.07 Å. Cu is bonded in a 9-coordinate geometry to nine Lu atoms. There are two inequivalent Te sites. In the first Te site, Te is bonded in a 7-coordinate geometry to seven Lu atoms. In the second Te site, Te is bonded in a 8-coordinate geometry to eight Lu atoms.