CoIn2Se4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Co(1) is bonded to four equivalent Se(1) atoms to form CoSe4 tetrahedra that share corners with twelve equivalent In(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 53°. In(1) is bonded to six equivalent Se(1) atoms to form InSe6 octahedra that share corners with six equivalent Co(1)Se4 tetrahedra and edges with six equivalent In(1)Se6 octahedra. Se(1) is bonded in a rectangular see-saw-like geometry to one Co(1) and three equivalent In(1) atoms.
CoIn2Se4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Co(1) is bonded to four equivalent Se(1) atoms to form CoSe4 tetrahedra that share corners with twelve equivalent In(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Co(1)-Se(1) bond lengths are 2.31 Å. In(1) is bonded to six equivalent Se(1) atoms to form InSe6 octahedra that share corners with six equivalent Co(1)Se4 tetrahedra and edges with six equivalent In(1)Se6 octahedra. All In(1)-Se(1) bond lengths are 2.81 Å. Se(1) is bonded in a rectangular see-saw-like geometry to one Co(1) and three equivalent In(1) atoms.