K2MnH2OF5 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one F(1), two equivalent F(2), and two equivalent F(3) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(1), one F(1), two equivalent F(2), and four equivalent F(3) atoms. Mn(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MnF6 octahedra. The corner-sharing octahedral tilt angles are 21°. H(1) is bonded in a single-bond geometry to one O(1) atom. O(1) is bonded in a water-like geometry to one K(1), one K(2), and two equivalent H(1) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one K(1), one K(2), and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Mn(1) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), and one Mn(1) atom.
K2MnH2OF5 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one F(1), two equivalent F(2), and two equivalent F(3) atoms. The K(1)-O(1) bond length is 2.80 Å. The K(1)-F(1) bond length is 2.98 Å. Both K(1)-F(2) bond lengths are 2.68 Å. Both K(1)-F(3) bond lengths are 2.70 Å. In the second K site, K(2) is bonded in a 8-coordinate geometry to one O(1), one F(1), two equivalent F(2), and four equivalent F(3) atoms. The K(2)-O(1) bond length is 2.71 Å. The K(2)-F(1) bond length is 2.70 Å. Both K(2)-F(2) bond lengths are 2.89 Å. There are two shorter (2.72 Å) and two longer (2.79 Å) K(2)-F(3) bond lengths. Mn(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MnF6 octahedra. The corner-sharing octahedral tilt angles are 21°. Both Mn(1)-F(1) bond lengths are 2.09 Å. Both Mn(1)-F(2) bond lengths are 1.89 Å. Both Mn(1)-F(3) bond lengths are 1.84 Å. H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.98 Å. O(1) is bonded in a water-like geometry to one K(1), one K(2), and two equivalent H(1) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a 2-coordinate geometry to one K(1), one K(2), and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted single-bond geometry to one K(1), one K(2), and one Mn(1) atom. In the third F site, F(3) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), and one Mn(1) atom.