Materials Data on Li2CuAs by Materials Project
Li2CuAs crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Li1+ is bonded to four equivalent As3- atoms to form a mixture of distorted corner, edge, and face-sharing LiAs4 tetrahedra. There are one shorter (2.66 Å) and three longer (2.75 Å) Li–As bond lengths. Cu1+ is bonded in a trigonal planar geometry to three equivalent As3- atoms. All Cu–As bond lengths are 2.42 Å. As3- is bonded in a 11-coordinate geometry to eight equivalent Li1+ and three equivalent Cu1+ atoms.
36 MATERIALS SCIENCE↗