MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(5), one O(7), one F(2), one F(3), one F(4), and one F(5) atom to form MgO2F4 octahedra that share  a cornercorner with one Mn(6)O2F4 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra,  a cornercorner with one Mn(4)O5 square pyramid, edges with two equivalent Mn(1)O4F2 octahedra,  a faceface with one Mn(6)O2F4 octahedra, and  a faceface with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 46-49°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), one O(6), one O(7), one F(2), and one F(5) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(3)O3F3 octahedra, corners with three equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O3F3 octahedra, edges with two equivalent Mg(1)O2F4 octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 33-56°. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one F(2), one F(3), and one F(4) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with three equivalent Mn(1)O4F2 octahedra,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(6)O2F4 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 33-53°. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(4), one F(1), one F(2), and one F(5) atom to form MnO3F3 octahedra that share corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with three equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 46-56°. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O2F4 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-73°. In the fifth Mn site, Mn(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one F(1), and one F(4) atom. In the sixth Mn site, Mn(6) is bonded to one O(6), one O(7), one F(1), one F(3), one F(4), and one F(5) atom to form distorted MnO2F4 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with three equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 35-51°. 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 trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom to form corner-sharing OMgMn3 trigonal pyramids. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom to form corner-sharing OMgMn3 trigonal pyramids. There are five inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(3) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the fifth F site, F(5) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom.
MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(5), one O(7), one F(2), one F(3), one F(4), and one F(5) atom to form MgO2F4 octahedra that share  a cornercorner with one Mn(6)O2F4 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra,  a cornercorner with one Mn(4)O5 square pyramid, edges with two equivalent Mn(1)O4F2 octahedra,  a faceface with one Mn(6)O2F4 octahedra, and  a faceface with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 46-49°. The Mg(1)-O(5) bond length is 2.03 Å. The Mg(1)-O(7) bond length is 2.03 Å. The Mg(1)-F(2) bond length is 2.01 Å. The Mg(1)-F(3) bond length is 2.02 Å. The Mg(1)-F(4) bond length is 2.03 Å. The Mg(1)-F(5) bond length is 2.01 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), one O(6), one O(7), one F(2), and one F(5) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(3)O3F3 octahedra, corners with three equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(2)O3F3 octahedra, edges with two equivalent Mg(1)O2F4 octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 33-56°. The Mn(1)-O(1) bond length is 1.98 Å. The Mn(1)-O(5) bond length is 2.01 Å. The Mn(1)-O(6) bond length is 1.94 Å. The Mn(1)-O(7) bond length is 1.98 Å. The Mn(1)-F(2) bond length is 2.31 Å. The Mn(1)-F(5) bond length is 2.53 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(5), one F(2), one F(3), and one F(4) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with three equivalent Mn(1)O4F2 octahedra,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(6)O2F4 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 33-53°. The Mn(2)-O(1) bond length is 1.91 Å. The Mn(2)-O(3) bond length is 1.87 Å. The Mn(2)-O(5) bond length is 2.03 Å. The Mn(2)-F(2) bond length is 2.39 Å. The Mn(2)-F(3) bond length is 2.14 Å. The Mn(2)-F(4) bond length is 2.09 Å. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(4), one F(1), one F(2), and one F(5) atom to form MnO3F3 octahedra that share corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with three equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 46-56°. The Mn(3)-O(2) bond length is 1.97 Å. The Mn(3)-O(3) bond length is 1.92 Å. The Mn(3)-O(4) bond length is 1.96 Å. The Mn(3)-F(1) bond length is 2.05 Å. The Mn(3)-F(2) bond length is 2.32 Å. The Mn(3)-F(5) bond length is 2.25 Å. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O2F4 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(6)O2F4 octahedra, corners with three equivalent Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-73°. The Mn(4)-O(2) bond length is 2.00 Å. The Mn(4)-O(3) bond length is 2.16 Å. The Mn(4)-O(4) bond length is 2.00 Å. The Mn(4)-O(6) bond length is 1.94 Å. The Mn(4)-O(7) bond length is 2.02 Å. In the fifth Mn site, Mn(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one F(1), and one F(4) atom. The Mn(5)-O(1) bond length is 1.95 Å. The Mn(5)-O(2) bond length is 1.94 Å. The Mn(5)-O(4) bond length is 1.95 Å. The Mn(5)-O(5) bond length is 2.02 Å. The Mn(5)-F(1) bond length is 2.31 Å. The Mn(5)-F(4) bond length is 2.67 Å. In the sixth Mn site, Mn(6) is bonded to one O(6), one O(7), one F(1), one F(3), one F(4), and one F(5) atom to form distorted MnO2F4 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with three equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 35-51°. The Mn(6)-O(6) bond length is 1.95 Å. The Mn(6)-O(7) bond length is 2.06 Å. The Mn(6)-F(1) bond length is 2.06 Å. The Mn(6)-F(3) bond length is 2.07 Å. The Mn(6)-F(4) bond length is 2.27 Å. The Mn(6)-F(5) bond length is 2.25 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 trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom to form corner-sharing OMgMn3 trigonal pyramids. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom to form corner-sharing OMgMn3 trigonal pyramids. There are five inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(3) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the fifth F site, F(5) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom.