Ce6Ni6P17 crystallizes in the cubic I-43m space group. Ce(1) is bonded in a 13-coordinate geometry to four equivalent Ni(1), one P(3), two equivalent P(2), and six equivalent P(1) atoms. Ni(1) is bonded in a distorted square co-planar geometry to four equivalent Ce(1) and four equivalent P(1) atoms. There are three inequivalent P sites. In the first P site, P(2) is bonded in a 6-coordinate geometry to three equivalent Ce(1) and three equivalent P(1) atoms. In the second P site, P(3) is bonded in an octahedral geometry to six equivalent Ce(1) atoms. In the third P site, P(1) is bonded in a 2-coordinate geometry to three equivalent Ce(1), two equivalent Ni(1), and one P(2) atom.
Ce6Ni6P17 crystallizes in the cubic I-43m space group. Ce(1) is bonded in a 13-coordinate geometry to four equivalent Ni(1), one P(3), two equivalent P(2), and six equivalent P(1) atoms. All Ce(1)-Ni(1) bond lengths are 3.26 Å. The Ce(1)-P(3) bond length is 2.90 Å. Both Ce(1)-P(2) bond lengths are 3.08 Å. There are four shorter (3.06 Å) and two longer (3.19 Å) Ce(1)-P(1) bond lengths. Ni(1) is bonded in a distorted square co-planar geometry to four equivalent Ce(1) and four equivalent P(1) atoms. All Ni(1)-P(1) bond lengths are 2.18 Å. There are three inequivalent P sites. In the first P site, P(2) is bonded in a 6-coordinate geometry to three equivalent Ce(1) and three equivalent P(1) atoms. All P(2)-P(1) bond lengths are 2.23 Å. In the second P site, P(3) is bonded in an octahedral geometry to six equivalent Ce(1) atoms. In the third P site, P(1) is bonded in a 2-coordinate geometry to three equivalent Ce(1), two equivalent Ni(1), and one P(2) atom.