Materials Data on Ca(CuP)2 by Materials Project

Abstract

Ca(CuP)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ca2+ is bonded to eight equivalent P3- atoms to form CaP8 hexagonal bipyramids that share corners with sixteen equivalent CuP4 tetrahedra, edges with four equivalent CaP8 hexagonal bipyramids, edges with eight equivalent CuP4 tetrahedra, and faces with four equivalent CaP8 hexagonal bipyramids. All Ca–P bond lengths are 3.07 Å. Cu2+ is bonded to four equivalent P3- atoms to form CuP4 tetrahedra that share corners with eight equivalent CaP8 hexagonal bipyramids, corners with four equivalent CuP4 tetrahedra, edges with four equivalent CaP8 hexagonal bipyramids, and edges with four equivalent CuP4 tetrahedra. All Cu–P bond lengths are 2.39 Å. P3- is bonded in a 9-coordinate geometry to four equivalent Ca2+, four equivalent Cu2+, and one P3- atom. The P–P bond length is 2.31 Å.