Ce2Ni5B4 crystallizes in the monoclinic C2/m space group. Ce(1) is bonded in a 1-coordinate geometry to two equivalent B(1) and three equivalent B(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to two equivalent B(1) and two equivalent B(2) atoms. In the second Ni site, Ni(2) is bonded in a linear geometry to two equivalent B(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), one Ni(2), four equivalent Ni(1), and one B(2) atom. In the second B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Ce(1), four equivalent Ni(1), one B(1), and one B(2) atom.
Ce2Ni5B4 crystallizes in the monoclinic C2/m space group. Ce(1) is bonded in a 1-coordinate geometry to two equivalent B(1) and three equivalent B(2) atoms. Both Ce(1)-B(1) bond lengths are 2.85 Å. There is one shorter (2.85 Å) and two longer (2.91 Å) Ce(1)-B(2) bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 4-coordinate geometry to two equivalent B(1) and two equivalent B(2) atoms. There is one shorter (2.03 Å) and one longer (2.19 Å) Ni(1)-B(1) bond length. There is one shorter (2.06 Å) and one longer (2.11 Å) Ni(1)-B(2) bond length. In the second Ni site, Ni(2) is bonded in a linear geometry to two equivalent B(1) atoms. Both Ni(2)-B(1) bond lengths are 2.03 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), one Ni(2), four equivalent Ni(1), and one B(2) atom. The B(1)-B(2) bond length is 1.67 Å. In the second B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Ce(1), four equivalent Ni(1), one B(1), and one B(2) atom. The B(2)-B(2) bond length is 1.78 Å.