CeSe2 crystallizes in the cubic Pa-3 space group. Ce(1) is bonded to six equivalent Se(1) atoms to form corner-sharing CeSe6 octahedra. The corner-sharing octahedral tilt angles are 60°. Se(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms.
CeSe2 crystallizes in the cubic Pa-3 space group. Ce(1) is bonded to six equivalent Se(1) atoms to form corner-sharing CeSe6 octahedra. The corner-sharing octahedral tilt angles are 60°. All Ce(1)-Se(1) bond lengths are 2.88 Å. Se(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms.