CeCO3F crystallizes in the hexagonal P-62c space group. Ce(1) is bonded in a 9-coordinate geometry to two equivalent O(1), four equivalent O(2), one F(2), and two equivalent F(1) atoms. C(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one C(1) atom. There are two inequivalent F sites. In the first F site, F(2) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms. In the second F site, F(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms.
CeCO3F crystallizes in the hexagonal P-62c space group. Ce(1) is bonded in a 9-coordinate geometry to two equivalent O(1), four equivalent O(2), one F(2), and two equivalent F(1) atoms. Both Ce(1)-O(1) bond lengths are 2.61 Å. All Ce(1)-O(2) bond lengths are 2.58 Å. The Ce(1)-F(2) bond length is 2.44 Å. Both Ce(1)-F(1) bond lengths are 2.41 Å. C(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. The C(1)-O(1) bond length is 1.29 Å. Both C(1)-O(2) bond lengths are 1.30 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Ce(1) and one C(1) atom. There are two inequivalent F sites. In the first F site, F(2) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms. In the second F site, F(1) is bonded in a trigonal planar geometry to three equivalent Ce(1) atoms.