Sr(CoGe)2 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 16-coordinate geometry to eight equivalent Co(1) and eight equivalent Ge(1) atoms. Co(1) is bonded to four equivalent Sr(1) and four equivalent Ge(1) atoms to form a mixture of distorted corner, face, and edge-sharing CoSr4Ge4 tetrahedra. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Co(1) atoms.
Sr(CoGe)2 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 16-coordinate geometry to eight equivalent Co(1) and eight equivalent Ge(1) atoms. All Sr(1)-Co(1) bond lengths are 3.39 Å. All Sr(1)-Ge(1) bond lengths are 3.23 Å. Co(1) is bonded to four equivalent Sr(1) and four equivalent Ge(1) atoms to form a mixture of distorted corner, face, and edge-sharing CoSr4Ge4 tetrahedra. All Co(1)-Ge(1) bond lengths are 2.31 Å. Ge(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Co(1) atoms.