CrMnF5 crystallizes in the monoclinic C2/c space group. Cr(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Mn(1)F7 pentagonal bipyramids, and edges with two equivalent Mn(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. Mn(1) is bonded to one F(2), two equivalent F(1), and four equivalent F(3) atoms to form distorted MnF7 pentagonal bipyramids that share corners with four equivalent Cr(1)F6 octahedra, edges with two equivalent Cr(1)F6 octahedra, and edges with two equivalent Mn(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 6-36°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one Cr(1) and one Mn(1) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one Mn(1) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Mn(1) atoms.
CrMnF5 crystallizes in the monoclinic C2/c space group. Cr(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Mn(1)F7 pentagonal bipyramids, and edges with two equivalent Mn(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. Both Cr(1)-F(1) bond lengths are 1.89 Å. Both Cr(1)-F(2) bond lengths are 1.93 Å. Both Cr(1)-F(3) bond lengths are 1.91 Å. Mn(1) is bonded to one F(2), two equivalent F(1), and four equivalent F(3) atoms to form distorted MnF7 pentagonal bipyramids that share corners with four equivalent Cr(1)F6 octahedra, edges with two equivalent Cr(1)F6 octahedra, and edges with two equivalent Mn(1)F7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 6-36°. The Mn(1)-F(2) bond length is 2.30 Å. Both Mn(1)-F(1) bond lengths are 2.01 Å. There are two shorter (2.13 Å) and two longer (2.39 Å) Mn(1)-F(3) bond lengths. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one Cr(1) and one Mn(1) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one Mn(1) atom. In the third F site, F(3) is bonded in a 3-coordinate geometry to one Cr(1) and two equivalent Mn(1) atoms.