Ca(RhGe)2 crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a 16-coordinate geometry to eight equivalent Rh(1) and eight equivalent Ge(1) atoms. Rh(1) is bonded to four equivalent Ca(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing RhCa4Ge4 tetrahedra. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1), four equivalent Rh(1), and one Ge(1) atom.
Ca(RhGe)2 crystallizes in the tetragonal I4/mmm space group. Ca(1) is bonded in a 16-coordinate geometry to eight equivalent Rh(1) and eight equivalent Ge(1) atoms. All Ca(1)-Rh(1) bond lengths are 3.33 Å. All Ca(1)-Ge(1) bond lengths are 3.21 Å. Rh(1) is bonded to four equivalent Ca(1) and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing RhCa4Ge4 tetrahedra. All Rh(1)-Ge(1) bond lengths are 2.44 Å. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Ca(1), four equivalent Rh(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.64 Å.