Ce2Mn(SeO)2 crystallizes in the tetragonal P-4m2 space group. Ce(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) and four equivalent O(1,2) atoms. Mn(1) is bonded to four equivalent Se(1) atoms to form corner-sharing MnSe4 tetrahedra. Se(1) is bonded in a 6-coordinate geometry to four equivalent Ce(1) and two equivalent Mn(1) atoms. O(1,2) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe4 tetrahedra.
Ce2Mn(SeO)2 crystallizes in the tetragonal P-4m2 space group. Ce(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) and four equivalent O(1,2) atoms. All Ce(1)-Se(1) bond lengths are 3.31 Å. All Ce(1)-O(1,2) bond lengths are 2.35 Å. Mn(1) is bonded to four equivalent Se(1) atoms to form corner-sharing MnSe4 tetrahedra. All Mn(1)-Se(1) bond lengths are 2.61 Å. Se(1) is bonded in a 6-coordinate geometry to four equivalent Ce(1) and two equivalent Mn(1) atoms. O(1,2) is bonded to four equivalent Ce(1) atoms to form a mixture of corner and edge-sharing OCe4 tetrahedra.