Materials Data on VNiP by Materials Project
VNiP crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. V2+ is bonded to five equivalent P3- atoms to form distorted VP5 trigonal bipyramids that share corners with eight equivalent NiP4 tetrahedra, corners with eight equivalent VP5 trigonal bipyramids, edges with six equivalent NiP4 tetrahedra, and edges with six equivalent VP5 trigonal bipyramids. There are a spread of V–P bond distances ranging from 2.44–2.56 Å. Ni1+ is bonded to four equivalent P3- atoms to form NiP4 tetrahedra that share corners with eight equivalent NiP4 tetrahedra, corners with eight equivalent VP5 trigonal bipyramids, edges with two equivalent NiP4 tetrahedra, and edges with six equivalent VP5 trigonal bipyramids. There are one shorter (2.21 Å) and three longer (2.25 Å) Ni–P bond lengths. P3- is bonded in a 9-coordinate geometry to five equivalent V2+ and four equivalent Ni1+ atoms.