MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(4), one O(5), one F(2), one F(3), and one F(4) atom to form distorted MgO3F3 octahedra that share  a cornercorner with one Mn(2)O3F3 octahedra,  a cornercorner with one Mn(3)O3F3 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(5)O3F trigonal pyramids, edges with two equivalent Mn(4)O3F3 octahedra,  a faceface with one Mn(2)O3F3 octahedra, and  a faceface with one Mn(3)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 42-52°. 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 O(7), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with four equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(5)O3F trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-54°. 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  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 32-58°. In the third Mn site, Mn(3) is bonded to one O(1), one O(4), one O(5), one F(1), one F(3), and one F(5) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra,  an edgeedge with one Mn(5)O3F trigonal pyramid, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 31-51°. 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 two equivalent Mn(3)O3F3 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(6)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 31-58°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(3), one O(5), and one F(1) atom to form distorted MnO3F trigonal pyramids that share  a cornercorner with one Mn(3)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra,  a cornercorner with one Mn(1)O4F2 octahedra, corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 54-77°. 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 distorted MnO4F2 octahedra that share corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra, corners with four equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(5)O3F trigonal pyramids, and  an edgeedge with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form a mixture of distorted corner and edge-sharing OMgMn3 trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form a mixture of distorted corner and edge-sharing OMgMn3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted 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 trigonal planar geometry to one Mn(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 rectangular see-saw-like geometry to one Mn(1), 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(4) atom. In the third F site, F(3) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one Mn(6) atom.
MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(4), one O(5), one F(2), one F(3), and one F(4) atom to form distorted MgO3F3 octahedra that share  a cornercorner with one Mn(2)O3F3 octahedra,  a cornercorner with one Mn(3)O3F3 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(5)O3F trigonal pyramids, edges with two equivalent Mn(4)O3F3 octahedra,  a faceface with one Mn(2)O3F3 octahedra, and  a faceface with one Mn(3)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 42-52°. The Mg(1)-O(1) bond length is 2.02 Å. The Mg(1)-O(4) bond length is 1.97 Å. The Mg(1)-O(5) bond length is 2.05 Å. The Mg(1)-F(2) bond length is 2.06 Å. The Mg(1)-F(3) bond length is 2.21 Å. The Mg(1)-F(4) bond length is 2.06 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 O(7), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with four equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(5)O3F trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-54°. The Mn(1)-O(3) bond length is 1.94 Å. The Mn(1)-O(5) bond length is 2.13 Å. The Mn(1)-O(6) bond length is 1.94 Å. The Mn(1)-O(7) bond length is 2.00 Å. The Mn(1)-F(1) bond length is 2.36 Å. The Mn(1)-F(2) bond length is 2.34 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  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O3F3 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 32-58°. The Mn(2)-O(2) bond length is 1.92 Å. The Mn(2)-O(4) bond length is 1.93 Å. The Mn(2)-O(6) bond length is 1.88 Å. The Mn(2)-F(2) bond length is 2.34 Å. The Mn(2)-F(3) bond length is 2.15 Å. The Mn(2)-F(4) bond length is 2.16 Å. In the third Mn site, Mn(3) is bonded to one O(1), one O(4), one O(5), one F(1), one F(3), and one F(5) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra,  an edgeedge with one Mn(5)O3F trigonal pyramid, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 31-51°. The Mn(3)-O(1) bond length is 2.02 Å. The Mn(3)-O(4) bond length is 1.85 Å. The Mn(3)-O(5) bond length is 1.98 Å. The Mn(3)-F(1) bond length is 2.15 Å. The Mn(3)-F(3) bond length is 2.33 Å. The Mn(3)-F(5) bond length is 1.98 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 two equivalent Mn(3)O3F3 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(5)O3F trigonal pyramid,  an edgeedge with one Mn(6)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 31-58°. The Mn(4)-O(1) bond length is 2.00 Å. The Mn(4)-O(2) bond length is 1.90 Å. The Mn(4)-O(7) bond length is 1.95 Å. The Mn(4)-F(2) bond length is 2.29 Å. The Mn(4)-F(3) bond length is 2.26 Å. The Mn(4)-F(4) bond length is 2.02 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(3), one O(5), and one F(1) atom to form distorted MnO3F trigonal pyramids that share  a cornercorner with one Mn(3)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra,  a cornercorner with one Mn(1)O4F2 octahedra, corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(3)O3F3 octahedra, and  an edgeedge with one Mn(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 54-77°. The Mn(5)-O(1) bond length is 2.09 Å. The Mn(5)-O(3) bond length is 2.00 Å. The Mn(5)-O(5) bond length is 2.01 Å. The Mn(5)-F(1) bond length is 2.19 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 distorted MnO4F2 octahedra that share corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra, corners with four equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(5)O3F trigonal pyramids, and  an edgeedge with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. The Mn(6)-O(2) bond length is 1.91 Å. The Mn(6)-O(3) bond length is 1.93 Å. The Mn(6)-O(6) bond length is 2.21 Å. The Mn(6)-O(7) bond length is 2.00 Å. The Mn(6)-F(1) bond length is 2.54 Å. The Mn(6)-F(5) bond length is 2.01 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form a mixture of distorted corner and edge-sharing OMgMn3 trigonal pyramids. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form a mixture of distorted corner and edge-sharing OMgMn3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted 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 trigonal planar geometry to one Mn(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 rectangular see-saw-like geometry to one Mn(1), 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(4) atom. In the third F site, F(3) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth F site, F(4) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a distorted bent 150 degrees geometry to one Mn(3) and one Mn(6) atom.