Materials Data on Y(CuTe)3 by Materials Project
Y(CuTe)3 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Y3+ is bonded to six equivalent Te2- atoms to form YTe6 octahedra that share corners with twelve equivalent CuTe4 tetrahedra, edges with three equivalent YTe6 octahedra, and edges with six equivalent CuTe4 tetrahedra. All Y–Te bond lengths are 3.09 Å. Cu1+ is bonded to four equivalent Te2- atoms to form CuTe4 tetrahedra that share corners with four equivalent YTe6 octahedra, corners with six equivalent CuTe4 tetrahedra, edges with two equivalent YTe6 octahedra, and edges with three equivalent CuTe4 tetrahedra. The corner-sharing octahedra tilt angles range from 17–62°. There are a spread of Cu–Te bond distances ranging from 2.58–2.71 Å. Te2- is bonded in a 6-coordinate geometry to two equivalent Y3+ and four equivalent Cu1+ atoms.