CeAsO4F crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), four equivalent O(1), and two equivalent F(1) atoms. As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ce(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. F(1) is bonded in a linear geometry to two equivalent Ce(1) atoms.
CeAsO4F crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), four equivalent O(1), and two equivalent F(1) atoms. The Ce(1)-O(2) bond length is 2.24 Å. The Ce(1)-O(3) bond length is 2.23 Å. There are two shorter (2.30 Å) and two longer (2.66 Å) Ce(1)-O(1) bond lengths. There is one shorter (2.27 Å) and one longer (2.40 Å) Ce(1)-F(1) bond length. As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. The As(1)-O(2) bond length is 1.71 Å. The As(1)-O(3) bond length is 1.70 Å. Both As(1)-O(1) bond lengths are 1.73 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ce(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. F(1) is bonded in a linear geometry to two equivalent Ce(1) atoms.