Cs2Se is Fluorite structured and crystallizes in the trigonal R-3m space group. Cs(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CsSe4 tetrahedra. Se(1) is bonded in a body-centered cubic geometry to eight equivalent Cs(1) atoms.
Cs2Se is Fluorite structured and crystallizes in the trigonal R-3m space group. Cs(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CsSe4 tetrahedra. All Cs(1)-Se(1) bond lengths are 3.66 Å. Se(1) is bonded in a body-centered cubic geometry to eight equivalent Cs(1) atoms.