Sr4Al6SeO12 crystallizes in the cubic I-43m space group. Sr(1) is bonded in a 7-coordinate geometry to one Se(1) and six equivalent O(1) atoms. Al(1) is bonded to four equivalent O(1) atoms to form corner-sharing AlO4 tetrahedra. Se(1) is bonded in a tetrahedral geometry to four equivalent Sr(1) atoms. O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and two equivalent Al(1) atoms.
Sr4Al6SeO12 crystallizes in the cubic I-43m space group. Sr(1) is bonded in a 7-coordinate geometry to one Se(1) and six equivalent O(1) atoms. The Sr(1)-Se(1) bond length is 3.11 Å. There are three shorter (2.50 Å) and three longer (3.04 Å) Sr(1)-O(1) bond lengths. Al(1) is bonded to four equivalent O(1) atoms to form corner-sharing AlO4 tetrahedra. All Al(1)-O(1) bond lengths are 1.76 Å. Se(1) is bonded in a tetrahedral geometry to four equivalent Sr(1) atoms. O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and two equivalent Al(1) atoms.