CeSe2 crystallizes in the cubic I2_13 space group. Ce(1) is bonded to one Se(2), one Se(3), and two equivalent Se(1) atoms to form corner-sharing CeSe4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. In the second Se site, Se(3) is bonded in a bent 150 degrees geometry to two equivalent Ce(1) atoms. In the third Se site, Se(2) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms.
CeSe2 crystallizes in the cubic I2_13 space group. Ce(1) is bonded to one Se(2), one Se(3), and two equivalent Se(1) atoms to form corner-sharing CeSe4 tetrahedra. The Ce(1)-Se(2) bond length is 2.73 Å. The Ce(1)-Se(3) bond length is 2.73 Å. There is one shorter (2.72 Å) and one longer (2.73 Å) Ce(1)-Se(1) bond length. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. In the second Se site, Se(3) is bonded in a bent 150 degrees geometry to two equivalent Ce(1) atoms. In the third Se site, Se(2) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms.