MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(4) atom to form MgO3F3 octahedra that share corners with two equivalent Mn(5)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(1)O3F2 square pyramid,  a cornercorner with one Mn(3)O3F2 square pyramid, edges with two equivalent Mn(2)O3F3 octahedra, and faces with two equivalent Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 34-47°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(5), one O(6), one F(1), and one F(2) atom to form distorted MnO3F2 square pyramids that share  a cornercorner with one Mg(1)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(5)O3F3 octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(3)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 40-74°. In the second Mn site, Mn(2) is bonded to one O(2), one O(4), one O(6), one F(2), one F(3), and one F(4) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(5)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O3F3 octahedra, edges with two equivalent Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F2 square pyramid, and  an edgeedge with one Mn(3)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 33-62°. In the third Mn site, Mn(3) is bonded to one O(3), one O(4), one O(5), one F(3), and one F(5) atom to form MnO3F2 square pyramids that share  a cornercorner with one Mg(1)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with three equivalent Mn(5)O3F3 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(1)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 37-66°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(1)O3F2 square pyramid,  a cornercorner with one Mn(3)O3F2 square pyramid,  an edgeedge with one Mn(5)O3F3 octahedra,  an edgeedge with one Mn(6)O4F2 octahedra, and faces with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 33-62°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(4), one O(5), one F(1), one F(4), and one F(5) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(1)O3F2 square pyramids, corners with three equivalent Mn(3)O3F2 square pyramids,  an edgeedge with one Mn(4)O3F3 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 34-57°. In the sixth Mn site, Mn(6) is bonded to one O(2), one O(3), one O(6), one O(7), one F(1), and one F(5) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F2 square pyramids, corners with three equivalent Mn(1)O3F2 square pyramids,  an edgeedge with one Mn(4)O3F3 octahedra, and  an edgeedge with one Mn(5)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 34-57°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(4), 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(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(5) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(4), and one Mn(6) atom. There are five inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form distorted corner-sharing FMgMn3 tetrahedra. In the third F site, F(3) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(5), and one Mn(6) atom.
MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(4) atom to form MgO3F3 octahedra that share corners with two equivalent Mn(5)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(1)O3F2 square pyramid,  a cornercorner with one Mn(3)O3F2 square pyramid, edges with two equivalent Mn(2)O3F3 octahedra, and faces with two equivalent Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 34-47°. The Mg(1)-O(1) bond length is 2.06 Å. The Mg(1)-O(2) bond length is 2.04 Å. The Mg(1)-O(7) bond length is 2.04 Å. The Mg(1)-F(2) bond length is 2.03 Å. The Mg(1)-F(3) bond length is 2.08 Å. The Mg(1)-F(4) bond length is 1.99 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(3), one O(5), one O(6), one F(1), and one F(2) atom to form distorted MnO3F2 square pyramids that share  a cornercorner with one Mg(1)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(5)O3F3 octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(3)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 40-74°. The Mn(1)-O(3) bond length is 2.00 Å. The Mn(1)-O(5) bond length is 1.89 Å. The Mn(1)-O(6) bond length is 1.94 Å. The Mn(1)-F(1) bond length is 2.31 Å. The Mn(1)-F(2) bond length is 2.03 Å. In the second Mn site, Mn(2) is bonded to one O(2), one O(4), one O(6), one F(2), one F(3), and one F(4) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(5)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O3F3 octahedra, edges with two equivalent Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F2 square pyramid, and  an edgeedge with one Mn(3)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 33-62°. The Mn(2)-O(2) bond length is 2.05 Å. The Mn(2)-O(4) bond length is 2.11 Å. The Mn(2)-O(6) bond length is 2.16 Å. The Mn(2)-F(2) bond length is 2.09 Å. The Mn(2)-F(3) bond length is 2.17 Å. The Mn(2)-F(4) bond length is 2.61 Å. In the third Mn site, Mn(3) is bonded to one O(3), one O(4), one O(5), one F(3), and one F(5) atom to form MnO3F2 square pyramids that share  a cornercorner with one Mg(1)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with three equivalent Mn(5)O3F3 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(1)O3F2 square pyramid. The corner-sharing octahedral tilt angles range from 37-66°. The Mn(3)-O(3) bond length is 1.89 Å. The Mn(3)-O(4) bond length is 1.95 Å. The Mn(3)-O(5) bond length is 2.03 Å. The Mn(3)-F(3) bond length is 2.03 Å. The Mn(3)-F(5) bond length is 2.25 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(1)O3F2 square pyramid,  a cornercorner with one Mn(3)O3F2 square pyramid,  an edgeedge with one Mn(5)O3F3 octahedra,  an edgeedge with one Mn(6)O4F2 octahedra, and faces with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 33-62°. The Mn(4)-O(1) bond length is 1.89 Å. The Mn(4)-O(2) bond length is 1.90 Å. The Mn(4)-O(7) bond length is 1.90 Å. The Mn(4)-F(2) bond length is 2.22 Å. The Mn(4)-F(3) bond length is 2.12 Å. The Mn(4)-F(4) bond length is 2.04 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(4), one O(5), one F(1), one F(4), and one F(5) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(1)O3F2 square pyramids, corners with three equivalent Mn(3)O3F2 square pyramids,  an edgeedge with one Mn(4)O3F3 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 34-57°. The Mn(5)-O(1) bond length is 1.93 Å. The Mn(5)-O(4) bond length is 1.94 Å. The Mn(5)-O(5) bond length is 2.06 Å. The Mn(5)-F(1) bond length is 2.20 Å. The Mn(5)-F(4) bond length is 2.54 Å. The Mn(5)-F(5) bond length is 2.02 Å. In the sixth Mn site, Mn(6) is bonded to one O(2), one O(3), one O(6), one O(7), one F(1), and one F(5) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F2 square pyramids, corners with three equivalent Mn(1)O3F2 square pyramids,  an edgeedge with one Mn(4)O3F3 octahedra, and  an edgeedge with one Mn(5)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 34-57°. The Mn(6)-O(2) bond length is 2.28 Å. The Mn(6)-O(3) bond length is 2.12 Å. The Mn(6)-O(6) bond length is 1.96 Å. The Mn(6)-O(7) bond length is 1.92 Å. The Mn(6)-F(1) bond length is 2.02 Å. The Mn(6)-F(5) bond length is 2.34 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(4), 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(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(5) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(4), and one Mn(6) atom. There are five inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form distorted corner-sharing FMgMn3 tetrahedra. In the third F site, F(3) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(5) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(5), and one Mn(6) atom.