CsFeO2 crystallizes in the cubic Fd-3m space group. Cs(1) is bonded in a 12-coordinate geometry to twelve equivalent O(1) atoms. Fe(1) is bonded to four equivalent O(1) atoms to form corner-sharing FeO4 tetrahedra. O(1) is bonded in a linear geometry to six equivalent Cs(1) and two equivalent Fe(1) atoms.
CsFeO2 crystallizes in the cubic Fd-3m space group. Cs(1) is bonded in a 12-coordinate geometry to twelve equivalent O(1) atoms. All Cs(1)-O(1) bond lengths are 3.57 Å. Fe(1) is bonded to four equivalent O(1) atoms to form corner-sharing FeO4 tetrahedra. All Fe(1)-O(1) bond lengths are 1.86 Å. O(1) is bonded in a linear geometry to six equivalent Cs(1) and two equivalent Fe(1) atoms.