Materials Data on Ni2P by Materials Project

Ni2P crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. there are two inequivalent Ni+1.50+ sites. In the first Ni+1.50+ site, Ni+1.50+ is bonded to five P3- atoms to form distorted NiP5 trigonal bipyramids that share corners with six equivalent NiP4 tetrahedra, corners with ten equivalent NiP5 trigonal bipyramids, edges with six equivalent NiP4 tetrahedra, and edges with six equivalent NiP5 trigonal bipyramids. There are one shorter (2.34 Å) and four longer (2.46 Å) Ni–P bond lengths. In the second Ni+1.50+ site, Ni+1.50+ is bonded to four P3- atoms to form NiP4 tetrahedra that share corners with ten equivalent NiP4 tetrahedra, corners with six equivalent NiP5 trigonal bipyramids, edges with two equivalent NiP4 tetrahedra, and edges with six equivalent NiP5 trigonal bipyramids. There are two shorter (2.21 Å) and two longer (2.27 Å) Ni–P bond lengths. There are two inequivalent P3- sites. In the first P3- site, P3- is bonded in a 9-coordinate geometry to nine Ni+1.50+ atoms. In the second P3- site, P3- is bonded in a 9-coordinate geometry to nine Ni+1.50+ atoms.