Sr2Fe2Se2OF2 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) and four equivalent F(1) atoms. Fe(1) is bonded in a distorted linear geometry to four equivalent Se(1) and two equivalent O(1) atoms. Se(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Fe(1) atoms. O(1) is bonded in a square co-planar geometry to four equivalent Fe(1) atoms. F(1) is bonded to four equivalent Sr(1) atoms to form a mixture of corner and edge-sharing FSr4 tetrahedra.
Sr2Fe2Se2OF2 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) and four equivalent F(1) atoms. All Sr(1)-Se(1) bond lengths are 3.29 Å. All Sr(1)-F(1) bond lengths are 2.51 Å. Fe(1) is bonded in a distorted linear geometry to four equivalent Se(1) and two equivalent O(1) atoms. All Fe(1)-Se(1) bond lengths are 2.78 Å. Both Fe(1)-O(1) bond lengths are 2.08 Å. Se(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Fe(1) atoms. O(1) is bonded in a square co-planar geometry to four equivalent Fe(1) atoms. F(1) is bonded to four equivalent Sr(1) atoms to form a mixture of corner and edge-sharing FSr4 tetrahedra.