MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(5), one O(7), one F(1), one F(2), and one F(3) atom to form MgO3F3 octahedra that share  a cornercorner with one Mn(2)O4F2 octahedra, corners with two equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, edges with two equivalent Mn(5)O4F2 octahedra, and  a faceface with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), one O(7), one F(2), one F(4), and one F(5) atom to form MnO3F3 octahedra that share corners with three equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-62°. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one O(7), one F(2), and one F(3) atom to form MnO4F2 octahedra that share  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with three equivalent Mn(1)O3F3 octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 32-59°. In the third Mn site, Mn(3) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(5), one O(6), one F(4), and one F(5) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with three equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 32-64°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(6), one O(7), one F(1), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(4), one F(1), one F(3), one F(4), and one F(5) atom to form MnO2F4 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O3F3 octahedra, corners with three equivalent Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-64°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a trigonal pyramidal geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(1), and one Mn(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom.
MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(5), one O(7), one F(1), one F(2), and one F(3) atom to form MgO3F3 octahedra that share  a cornercorner with one Mn(2)O4F2 octahedra, corners with two equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, edges with two equivalent Mn(5)O4F2 octahedra, and  a faceface with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. The Mg(1)-O(2) bond length is 1.98 Å. The Mg(1)-O(5) bond length is 2.08 Å. The Mg(1)-O(7) bond length is 2.02 Å. The Mg(1)-F(1) bond length is 1.99 Å. The Mg(1)-F(2) bond length is 2.03 Å. The Mg(1)-F(3) bond length is 2.09 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), one O(7), one F(2), one F(4), and one F(5) atom to form MnO3F3 octahedra that share corners with three equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-62°. The Mn(1)-O(1) bond length is 1.91 Å. The Mn(1)-O(4) bond length is 1.89 Å. The Mn(1)-O(7) bond length is 2.12 Å. The Mn(1)-F(2) bond length is 2.10 Å. The Mn(1)-F(4) bond length is 2.08 Å. The Mn(1)-F(5) bond length is 2.27 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one O(7), one F(2), and one F(3) atom to form MnO4F2 octahedra that share  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with three equivalent Mn(1)O3F3 octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 32-59°. The Mn(2)-O(1) bond length is 1.94 Å. The Mn(2)-O(3) bond length is 1.96 Å. The Mn(2)-O(5) bond length is 2.06 Å. The Mn(2)-O(7) bond length is 2.01 Å. The Mn(2)-F(2) bond length is 2.24 Å. The Mn(2)-F(3) bond length is 2.31 Å. In the third Mn site, Mn(3) is bonded in a 4-coordinate geometry to one O(2), one O(4), one O(5), and one O(6) atom. The Mn(3)-O(2) bond length is 2.04 Å. The Mn(3)-O(4) bond length is 1.92 Å. The Mn(3)-O(5) bond length is 1.91 Å. The Mn(3)-O(6) bond length is 1.97 Å. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(5), one O(6), one F(4), and one F(5) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with three equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 32-64°. The Mn(4)-O(2) bond length is 2.24 Å. The Mn(4)-O(3) bond length is 1.94 Å. The Mn(4)-O(5) bond length is 2.37 Å. The Mn(4)-O(6) bond length is 1.95 Å. The Mn(4)-F(4) bond length is 2.25 Å. The Mn(4)-F(5) bond length is 2.09 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(6), one O(7), one F(1), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-62°. The Mn(5)-O(1) bond length is 1.97 Å. The Mn(5)-O(2) bond length is 1.98 Å. The Mn(5)-O(6) bond length is 1.98 Å. The Mn(5)-O(7) bond length is 1.97 Å. The Mn(5)-F(1) bond length is 2.19 Å. The Mn(5)-F(3) bond length is 2.27 Å. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(4), one F(1), one F(3), one F(4), and one F(5) atom to form MnO2F4 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O3F3 octahedra, corners with three equivalent Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-64°. The Mn(6)-O(3) bond length is 2.08 Å. The Mn(6)-O(4) bond length is 2.06 Å. The Mn(6)-F(1) bond length is 2.20 Å. The Mn(6)-F(3) bond length is 2.20 Å. The Mn(6)-F(4) bond length is 2.09 Å. The Mn(6)-F(5) bond length is 2.08 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a trigonal pyramidal geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(1), and one Mn(2) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the fifth F site, F(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom.