Ca2Ni3Ge2 crystallizes in the orthorhombic Pmma space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), one Ge(1), and four equivalent Ge(2) atoms. In the second Ca site, Ca(2) is bonded in a 10-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), two equivalent Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ca(1), two equivalent Ca(2), four equivalent Ni(2), two equivalent Ge(1), and two equivalent Ge(2) atoms to form a mixture of distorted face and corner-sharing NiCa4Ni4Ge4 cuboctahedra. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ni(2), two equivalent Ni(1), one Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ca(1), four equivalent Ca(2), two equivalent Ni(1), and two equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 12-coordinate geometry to two equivalent Ca(2), four equivalent Ca(1), two equivalent Ni(1), and four equivalent Ni(2) atoms.
Ca2Ni3Ge2 crystallizes in the orthorhombic Pmma space group. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 5-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), one Ge(1), and four equivalent Ge(2) atoms. Both Ca(1)-Ni(1) bond lengths are 3.19 Å. There are two shorter (2.78 Å) and two longer (2.92 Å) Ca(1)-Ni(2) bond lengths. The Ca(1)-Ge(1) bond length is 3.03 Å. All Ca(1)-Ge(2) bond lengths are 3.24 Å. In the second Ca site, Ca(2) is bonded in a 10-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), two equivalent Ge(2), and four equivalent Ge(1) atoms. Both Ca(2)-Ni(1) bond lengths are 3.17 Å. All Ca(2)-Ni(2) bond lengths are 3.22 Å. Both Ca(2)-Ge(2) bond lengths are 3.51 Å. All Ca(2)-Ge(1) bond lengths are 3.10 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ca(1), two equivalent Ca(2), four equivalent Ni(2), two equivalent Ge(1), and two equivalent Ge(2) atoms to form a mixture of distorted face and corner-sharing NiCa4Ni4Ge4 cuboctahedra. All Ni(1)-Ni(2) bond lengths are 2.57 Å. Both Ni(1)-Ge(1) bond lengths are 2.50 Å. Both Ni(1)-Ge(2) bond lengths are 2.61 Å. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Ca(1), two equivalent Ca(2), one Ni(2), two equivalent Ni(1), one Ge(1), and two equivalent Ge(2) atoms. The Ni(2)-Ni(2) bond length is 2.53 Å. The Ni(2)-Ge(1) bond length is 2.36 Å. Both Ni(2)-Ge(2) bond lengths are 2.36 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ca(1), four equivalent Ca(2), two equivalent Ni(1), and two equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 12-coordinate geometry to two equivalent Ca(2), four equivalent Ca(1), two equivalent Ni(1), and four equivalent Ni(2) atoms.