CeF3 is Sodium arsenide structured and crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(3), two equivalent F(4), and four equivalent F(1) atoms. In the second Ce site, Ce(2) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(1), two equivalent F(3), and four equivalent F(4) atoms. In the third Ce site, Ce(3) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(1), two equivalent F(4), and four equivalent F(3) atoms. There are six inequivalent F sites. In the first F site, F(1) is bonded to one Ce(2), one Ce(3), and two equivalent Ce(1) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom. In the third F site, F(3) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the fourth F site, F(4) is bonded to one Ce(1), one Ce(3), and two equivalent Ce(2) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom. In the sixth F site, F(6) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom.
CeF3 is Sodium arsenide structured and crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(3), two equivalent F(4), and four equivalent F(1) atoms. The Ce(1)-F(2) bond length is 2.37 Å. The Ce(1)-F(5) bond length is 2.37 Å. The Ce(1)-F(6) bond length is 2.37 Å. Both Ce(1)-F(3) bond lengths are 2.68 Å. Both Ce(1)-F(4) bond lengths are 2.67 Å. There are two shorter (2.38 Å) and two longer (2.67 Å) Ce(1)-F(1) bond lengths. In the second Ce site, Ce(2) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(1), two equivalent F(3), and four equivalent F(4) atoms. The Ce(2)-F(2) bond length is 2.37 Å. The Ce(2)-F(5) bond length is 2.38 Å. The Ce(2)-F(6) bond length is 2.37 Å. Both Ce(2)-F(1) bond lengths are 2.69 Å. Both Ce(2)-F(3) bond lengths are 2.66 Å. There are two shorter (2.38 Å) and two longer (2.68 Å) Ce(2)-F(4) bond lengths. In the third Ce site, Ce(3) is bonded in a 11-coordinate geometry to one F(2), one F(5), one F(6), two equivalent F(1), two equivalent F(4), and four equivalent F(3) atoms. The Ce(3)-F(2) bond length is 2.37 Å. The Ce(3)-F(5) bond length is 2.37 Å. The Ce(3)-F(6) bond length is 2.37 Å. Both Ce(3)-F(1) bond lengths are 2.66 Å. Both Ce(3)-F(4) bond lengths are 2.68 Å. There are two shorter (2.38 Å) and two longer (2.68 Å) Ce(3)-F(3) bond lengths. There are six inequivalent F sites. In the first F site, F(1) is bonded to one Ce(2), one Ce(3), and two equivalent Ce(1) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the second F site, F(2) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom. In the third F site, F(3) is bonded to one Ce(1), one Ce(2), and two equivalent Ce(3) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the fourth F site, F(4) is bonded to one Ce(1), one Ce(3), and two equivalent Ce(2) atoms to form a mixture of distorted face, corner, and edge-sharing FCe4 tetrahedra. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom. In the sixth F site, F(6) is bonded in a trigonal planar geometry to one Ce(1), one Ce(2), and one Ce(3) atom.