CeSe2 is Baddeleyite-like structured and crystallizes in the orthorhombic Pbca space group. Ce(1) is bonded to three equivalent Se(1) and four equivalent Se(2) atoms to form a mixture of distorted corner and edge-sharing CeSe7 pentagonal bipyramids. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms. In the second Se site, Se(2) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing SeCe4 tetrahedra.
CeSe2 is Baddeleyite-like structured and crystallizes in the orthorhombic Pbca space group. Ce(1) is bonded to three equivalent Se(1) and four equivalent Se(2) atoms to form a mixture of distorted corner and edge-sharing CeSe7 pentagonal bipyramids. There are two shorter (2.88 Å) and one longer (2.93 Å) Ce(1)-Se(1) bond length. There are a spread of Ce(1)-Se(2) bond distances ranging from 2.95-2.99 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms. In the second Se site, Se(2) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing SeCe4 tetrahedra.