Ca2SnGe2 crystallizes in the tetragonal P4/mbm space group. Ca(1) is bonded in a 10-coordinate geometry to four equivalent Sn(1) and six equivalent Ge(1) atoms. Sn(1) is bonded to eight equivalent Ca(1) and four equivalent Ge(1) atoms to form a mixture of corner and face-sharing SnCa8Ge4 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ca(1), two equivalent Sn(1), and one Ge(1) atom.
Ca2SnGe2 crystallizes in the tetragonal P4/mbm space group. Ca(1) is bonded in a 10-coordinate geometry to four equivalent Sn(1) and six equivalent Ge(1) atoms. All Ca(1)-Sn(1) bond lengths are 3.53 Å. There are two shorter (3.10 Å) and four longer (3.16 Å) Ca(1)-Ge(1) bond lengths. Sn(1) is bonded to eight equivalent Ca(1) and four equivalent Ge(1) atoms to form a mixture of corner and face-sharing SnCa8Ge4 cuboctahedra. All Sn(1)-Ge(1) bond lengths are 2.96 Å. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ca(1), two equivalent Sn(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.48 Å.