YNi2P2 crystallizes in the tetragonal I4/mmm space group. Y(1) is bonded in a 16-coordinate geometry to eight equivalent Ni(1) and eight equivalent P(1) atoms. Ni(1) is bonded to four equivalent Y(1) and four equivalent P(1) atoms to form a mixture of distorted edge, corner, and face-sharing NiY4P4 tetrahedra. P(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Ni(1), and one P(1) atom.
YNi2P2 crystallizes in the tetragonal I4/mmm space group. Y(1) is bonded in a 16-coordinate geometry to eight equivalent Ni(1) and eight equivalent P(1) atoms. All Y(1)-Ni(1) bond lengths are 3.03 Å. All Y(1)-P(1) bond lengths are 2.96 Å. Ni(1) is bonded to four equivalent Y(1) and four equivalent P(1) atoms to form a mixture of distorted edge, corner, and face-sharing NiY4P4 tetrahedra. All Ni(1)-P(1) bond lengths are 2.26 Å. P(1) is bonded in a 9-coordinate geometry to four equivalent Y(1), four equivalent Ni(1), and one P(1) atom. The P(1)-P(1) bond length is 2.31 Å.