Materials Data on K2NiP2 by Materials Project

K2NiP2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent P2- atoms. There are two shorter (3.31 Å) and four longer (3.52 Å) K–P bond lengths. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six equivalent P2- atoms. There are two shorter (3.34 Å) and four longer (3.39 Å) K–P bond lengths. Ni2+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent P2- atoms. All Ni–P bond lengths are 2.26 Å. P2- is bonded in a 9-coordinate geometry to six K1+, two equivalent Ni2+, and one P2- atom. The P–P bond length is 2.18 Å.