CeSe2 is Rutile-like structured and crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded to three equivalent Se(1) and three equivalent Se(2) atoms to form a mixture of edge and corner-sharing CeSe6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two inequivalent Se sites. In the first Se site, Se(2) is bonded in a distorted T-shaped geometry to three equivalent Ce(1) atoms. In the second Se site, Se(1) is bonded in a distorted trigonal planar geometry to three equivalent Ce(1) atoms.
CeSe2 is Rutile-like structured and crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded to three equivalent Se(1) and three equivalent Se(2) atoms to form a mixture of edge and corner-sharing CeSe6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (2.86 Å) and one longer (2.87 Å) Ce(1)-Se(1) bond length. There is one shorter (2.86 Å) and two longer (2.87 Å) Ce(1)-Se(2) bond lengths. There are two inequivalent Se sites. In the first Se site, Se(2) is bonded in a distorted T-shaped geometry to three equivalent Ce(1) atoms. In the second Se site, Se(1) is bonded in a distorted trigonal planar geometry to three equivalent Ce(1) atoms.