CdAl2Se4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Cd(1) is bonded to four equivalent Se(1) atoms to form CdSe4 tetrahedra that share corners with twelve equivalent Al(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 59°. Al(1) is bonded to six equivalent Se(1) atoms to form AlSe6 octahedra that share corners with six equivalent Cd(1)Se4 tetrahedra and edges with six equivalent Al(1)Se6 octahedra. Se(1) is bonded to one Cd(1) and three equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing SeAl3Cd trigonal pyramids.
CdAl2Se4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Cd(1) is bonded to four equivalent Se(1) atoms to form CdSe4 tetrahedra that share corners with twelve equivalent Al(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 59°. All Cd(1)-Se(1) bond lengths are 2.61 Å. Al(1) is bonded to six equivalent Se(1) atoms to form AlSe6 octahedra that share corners with six equivalent Cd(1)Se4 tetrahedra and edges with six equivalent Al(1)Se6 octahedra. All Al(1)-Se(1) bond lengths are 2.57 Å. Se(1) is bonded to one Cd(1) and three equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing SeAl3Cd trigonal pyramids.