MgMn5O9F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(4), one O(7), one O(8), one O(9), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Mn(2)O5F octahedra,  a cornercorner with one Mn(4)O5F octahedra,  a cornercorner with one Mn(5)O5F octahedra,  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(4)O5F octahedra, and edges with two equivalent Mn(5)O5F octahedra. The corner-sharing octahedral tilt angles range from 2-17°. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(5)O5F octahedra, edges with two equivalent Mn(4)O5F octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 15°. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(5)O5F octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 16°. In the third Mn site, Mn(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(5)O5F octahedra, edges with two equivalent Mn(2)O5F octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-17°. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(7), one O(8), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mg(1)O5F octahedra, edges with two equivalent Mn(5)O5F octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 16°. In the fifth Mn site, Mn(5) is bonded to one O(3), one O(4), one O(5), one O(8), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mg(1)O5F octahedra, edges with two equivalent Mn(2)O5F octahedra, and edges with two equivalent Mn(4)O5F octahedra. The corner-sharing octahedral tilt angles are 2°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(3), and one Mn(4) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(5) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mn(2), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(4) atom. In the eighth O site, O(8) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(5) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom. F(1) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom.
MgMn5O9F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(4), one O(7), one O(8), one O(9), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Mn(2)O5F octahedra,  a cornercorner with one Mn(4)O5F octahedra,  a cornercorner with one Mn(5)O5F octahedra,  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(4)O5F octahedra, and edges with two equivalent Mn(5)O5F octahedra. The corner-sharing octahedral tilt angles range from 2-17°. The Mg(1)-O(3) bond length is 2.13 Å. The Mg(1)-O(4) bond length is 2.27 Å. The Mg(1)-O(7) bond length is 2.18 Å. The Mg(1)-O(8) bond length is 2.18 Å. The Mg(1)-O(9) bond length is 2.17 Å. The Mg(1)-F(1) bond length is 2.05 Å. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(5)O5F octahedra, edges with two equivalent Mn(4)O5F octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 15°. The Mn(1)-O(1) bond length is 1.92 Å. The Mn(1)-O(2) bond length is 1.95 Å. The Mn(1)-O(3) bond length is 2.08 Å. The Mn(1)-O(6) bond length is 1.92 Å. The Mn(1)-O(7) bond length is 1.95 Å. The Mn(1)-O(8) bond length is 1.97 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(5)O5F octahedra, and edges with two equivalent Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles are 16°. The Mn(2)-O(1) bond length is 1.99 Å. The Mn(2)-O(4) bond length is 2.04 Å. The Mn(2)-O(5) bond length is 1.92 Å. The Mn(2)-O(6) bond length is 2.10 Å. The Mn(2)-O(9) bond length is 2.00 Å. The Mn(2)-F(1) bond length is 2.30 Å. In the third Mn site, Mn(3) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(7) atom to form MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(5)O5F octahedra, edges with two equivalent Mn(2)O5F octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 14-17°. The Mn(3)-O(1) bond length is 1.98 Å. The Mn(3)-O(2) bond length is 1.96 Å. The Mn(3)-O(4) bond length is 2.04 Å. The Mn(3)-O(5) bond length is 1.95 Å. The Mn(3)-O(6) bond length is 1.92 Å. The Mn(3)-O(7) bond length is 2.00 Å. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(7), one O(8), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mg(1)O5F octahedra, edges with two equivalent Mn(5)O5F octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 16°. The Mn(4)-O(2) bond length is 1.93 Å. The Mn(4)-O(3) bond length is 2.10 Å. The Mn(4)-O(7) bond length is 2.07 Å. The Mn(4)-O(8) bond length is 2.07 Å. The Mn(4)-O(9) bond length is 1.91 Å. The Mn(4)-F(1) bond length is 2.15 Å. In the fifth Mn site, Mn(5) is bonded to one O(3), one O(4), one O(5), one O(8), one O(9), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mg(1)O5F octahedra, edges with two equivalent Mn(2)O5F octahedra, and edges with two equivalent Mn(4)O5F octahedra. The corner-sharing octahedral tilt angles are 2°. The Mn(5)-O(3) bond length is 1.97 Å. The Mn(5)-O(4) bond length is 1.93 Å. The Mn(5)-O(5) bond length is 1.94 Å. The Mn(5)-O(8) bond length is 1.94 Å. The Mn(5)-O(9) bond length is 2.19 Å. The Mn(5)-F(1) bond length is 2.38 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(3), and one Mn(4) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(5) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mn(2), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(4) atom. In the eighth O site, O(8) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(5) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom. F(1) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom.