RbAsOF4 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 10-coordinate geometry to one O(1), two equivalent F(1), two equivalent F(2), two equivalent F(4), and three equivalent F(3) atoms. As(1) is bonded to two equivalent O(1), one F(1), one F(2), one F(3), and one F(4) atom to form edge-sharing AsO2F4 octahedra. O(1) is bonded in a distorted L-shaped geometry to one Rb(1) and two equivalent As(1) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to three equivalent Rb(1) and one As(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom.
RbAsOF4 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 10-coordinate geometry to one O(1), two equivalent F(1), two equivalent F(2), two equivalent F(4), and three equivalent F(3) atoms. The Rb(1)-O(1) bond length is 3.04 Å. There is one shorter (2.92 Å) and one longer (2.95 Å) Rb(1)-F(1) bond length. There is one shorter (2.91 Å) and one longer (3.03 Å) Rb(1)-F(2) bond length. There is one shorter (2.97 Å) and one longer (3.16 Å) Rb(1)-F(4) bond length. There are a spread of Rb(1)-F(3) bond distances ranging from 3.10-3.37 Å. As(1) is bonded to two equivalent O(1), one F(1), one F(2), one F(3), and one F(4) atom to form edge-sharing AsO2F4 octahedra. Both As(1)-O(1) bond lengths are 1.83 Å. The As(1)-F(1) bond length is 1.80 Å. The As(1)-F(2) bond length is 1.82 Å. The As(1)-F(3) bond length is 1.80 Å. The As(1)-F(4) bond length is 1.79 Å. O(1) is bonded in a distorted L-shaped geometry to one Rb(1) and two equivalent As(1) atoms. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom. In the second F site, F(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom. In the third F site, F(3) is bonded in a single-bond geometry to three equivalent Rb(1) and one As(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one As(1) atom.