Cs(CoSe)2 crystallizes in the tetragonal I4/mmm space group. Cs(1) is bonded in a body-centered cubic geometry to eight equivalent Se(1) atoms. Co(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CoSe4 tetrahedra. Se(1) is bonded in a 8-coordinate geometry to four equivalent Cs(1) and four equivalent Co(1) atoms.
Cs(CoSe)2 crystallizes in the tetragonal I4/mmm space group. Cs(1) is bonded in a body-centered cubic geometry to eight equivalent Se(1) atoms. All Cs(1)-Se(1) bond lengths are 3.64 Å. Co(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CoSe4 tetrahedra. All Co(1)-Se(1) bond lengths are 2.36 Å. Se(1) is bonded in a 8-coordinate geometry to four equivalent Cs(1) and four equivalent Co(1) atoms.