CaGe2 crystallizes in the monoclinic C2/m space group. Ca(1) is bonded to twelve equivalent Ge(1) atoms to form a mixture of distorted edge and face-sharing CaGe12 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ca(1) and three equivalent Ge(1) atoms.
CaGe2 crystallizes in the monoclinic C2/m space group. Ca(1) is bonded to twelve equivalent Ge(1) atoms to form a mixture of distorted edge and face-sharing CaGe12 cuboctahedra. There are a spread of Ca(1)-Ge(1) bond distances ranging from 3.07-3.56 Å. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Ca(1) and three equivalent Ge(1) atoms. There is one shorter (2.51 Å) and two longer (2.61 Å) Ge(1)-Ge(1) bond lengths.