Cr4OF11 crystallizes in the monoclinic C2 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one F(1), one F(2), one F(5), and two equivalent F(4) atoms to form CrOF5 octahedra that share corners with three equivalent Cr(2)F6 octahedra and corners with three equivalent Cr(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 35-40°. In the second Cr site, Cr(2) is bonded to one F(1), one F(2), one F(5), one F(6), and two equivalent F(3) atoms to form CrF6 octahedra that share corners with three equivalent Cr(2)F6 octahedra and corners with three equivalent Cr(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 35-39°. O(1) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent Cr(2) atoms. In the fourth F site, F(4) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to two equivalent Cr(2) atoms.
Cr4OF11 crystallizes in the monoclinic C2 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one F(1), one F(2), one F(5), and two equivalent F(4) atoms to form CrOF5 octahedra that share corners with three equivalent Cr(2)F6 octahedra and corners with three equivalent Cr(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 35-40°. The Cr(1)-O(1) bond length is 1.83 Å. The Cr(1)-F(1) bond length is 1.95 Å. The Cr(1)-F(2) bond length is 1.98 Å. The Cr(1)-F(5) bond length is 1.94 Å. There is one shorter (1.94 Å) and one longer (1.96 Å) Cr(1)-F(4) bond length. In the second Cr site, Cr(2) is bonded to one F(1), one F(2), one F(5), one F(6), and two equivalent F(3) atoms to form CrF6 octahedra that share corners with three equivalent Cr(2)F6 octahedra and corners with three equivalent Cr(1)OF5 octahedra. The corner-sharing octahedral tilt angles range from 35-39°. The Cr(2)-F(1) bond length is 1.96 Å. The Cr(2)-F(2) bond length is 1.94 Å. The Cr(2)-F(5) bond length is 1.95 Å. The Cr(2)-F(6) bond length is 1.95 Å. Both Cr(2)-F(3) bond lengths are 1.95 Å. O(1) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the second F site, F(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent Cr(2) atoms. In the fourth F site, F(4) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one Cr(1) and one Cr(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to two equivalent Cr(2) atoms.