CeSe2 is High (Orthorhombic) Tridymite-like structured and crystallizes in the trigonal R-3m space group. Ce(1) is bonded to one Se(1), one Se(3), and two equivalent Se(2) atoms to form distorted corner-sharing CeSe4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a linear geometry to two equivalent Ce(1) atoms. In the second Se site, Se(3) is bonded in a linear geometry to two equivalent Ce(1) atoms. In the third Se site, Se(2) is bonded in a linear geometry to two equivalent Ce(1) atoms.
CeSe2 is High (Orthorhombic) Tridymite-like structured and crystallizes in the trigonal R-3m space group. Ce(1) is bonded to one Se(1), one Se(3), and two equivalent Se(2) atoms to form distorted corner-sharing CeSe4 tetrahedra. The Ce(1)-Se(1) bond length is 2.68 Å. The Ce(1)-Se(3) bond length is 2.76 Å. Both Ce(1)-Se(2) bond lengths are 2.73 Å. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a linear geometry to two equivalent Ce(1) atoms. In the second Se site, Se(3) is bonded in a linear geometry to two equivalent Ce(1) atoms. In the third Se site, Se(2) is bonded in a linear geometry to two equivalent Ce(1) atoms.