Materials Data on Sr(NiP)2 by Materials Project
SrNi2P2 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a distorted body-centered cubic geometry to eight P3- atoms. There are four shorter (3.16 Å) and four longer (3.19 Å) Sr–P bond lengths. In the second Sr2+ site, Sr2+ is bonded in a body-centered cubic geometry to eight equivalent P3- atoms. All Sr–P bond lengths are 3.24 Å. There are two inequivalent Ni2+ sites. In the first Ni2+ site, Ni2+ is bonded to four P3- atoms to form a mixture of edge and corner-sharing NiP4 tetrahedra. There are three shorter (2.25 Å) and one longer (2.28 Å) Ni–P bond lengths. In the second Ni2+ site, Ni2+ is bonded to four P3- atoms to form a mixture of edge and corner-sharing NiP4 tetrahedra. There are two shorter (2.28 Å) and two longer (2.29 Å) Ni–P bond lengths. There are two inequivalent P3- sites. In the first P3- site, P3- is bonded in a 4-coordinate geometry to four Sr2+ and four Ni2+ atoms. In the second P3- site, P3- is bonded in a 9-coordinate geometry to four equivalent Sr2+, four Ni2+, and one P3- atom. The P–P bond length is 2.51 Å.