Sr(NiP2)2 crystallizes in the orthorhombic Fddd space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent P(1) atoms. Ni(1) is bonded to four equivalent P(1) atoms to form distorted edge-sharing NiP4 tetrahedra. P(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Ni(1), and two equivalent P(1) atoms.
Sr(NiP2)2 crystallizes in the orthorhombic Fddd space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent P(1) atoms. There are four shorter (3.12 Å) and four longer (3.14 Å) Sr(1)-P(1) bond lengths. Ni(1) is bonded to four equivalent P(1) atoms to form distorted edge-sharing NiP4 tetrahedra. There are two shorter (2.19 Å) and two longer (2.21 Å) Ni(1)-P(1) bond lengths. P(1) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Ni(1), and two equivalent P(1) atoms. There is one shorter (2.23 Å) and one longer (2.25 Å) P(1)-P(1) bond length.