Ce3Ni2Ge7 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(1), two equivalent Ge(3), and six equivalent Ge(2) atoms. In the second Ce site, Ce(2) is bonded to four equivalent Ge(1), four equivalent Ge(3), and four equivalent Ge(4) atoms to form a mixture of distorted face and corner-sharing CeGe12 cuboctahedra. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1), one Ge(2), two equivalent Ge(1), and two equivalent Ge(3) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Ce(1), one Ni(1), and two equivalent Ge(2) atoms. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Ni(1) atoms. In the fourth Ge site, Ge(4) is bonded in a square co-planar geometry to four equivalent Ce(2) atoms.
Ce3Ni2Ge7 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Ge(1), two equivalent Ge(3), and six equivalent Ge(2) atoms. All Ce(1)-Ni(1) bond lengths are 3.34 Å. Both Ce(1)-Ge(1) bond lengths are 3.25 Å. Both Ce(1)-Ge(3) bond lengths are 3.24 Å. There are four shorter (3.16 Å) and two longer (3.18 Å) Ce(1)-Ge(2) bond lengths. In the second Ce site, Ce(2) is bonded to four equivalent Ge(1), four equivalent Ge(3), and four equivalent Ge(4) atoms to form a mixture of distorted face and corner-sharing CeGe12 cuboctahedra. All Ce(2)-Ge(1) bond lengths are 3.08 Å. All Ce(2)-Ge(3) bond lengths are 3.09 Å. All Ce(2)-Ge(4) bond lengths are 3.02 Å. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ce(1), one Ge(2), two equivalent Ge(1), and two equivalent Ge(3) atoms. The Ni(1)-Ge(2) bond length is 2.36 Å. Both Ni(1)-Ge(1) bond lengths are 2.37 Å. Both Ni(1)-Ge(3) bond lengths are 2.37 Å. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Ce(1), one Ni(1), and two equivalent Ge(2) atoms. Both Ge(2)-Ge(2) bond lengths are 2.56 Å. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), and two equivalent Ni(1) atoms. In the fourth Ge site, Ge(4) is bonded in a square co-planar geometry to four equivalent Ce(2) atoms.