MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(4), one O(5), one F(1), one F(2), one F(4), and one F(5) atom to form MgO2F4 octahedra that share  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, edges with two equivalent Mn(2)O3F3 octahedra, and  a faceface with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(6), one O(7), and one F(3) atom to form MnO4F trigonal bipyramids that share corners with two equivalent Mn(4)O3F3 octahedra, corners with three equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-64°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), one O(5), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with two equivalent Mn(6)O3F3 octahedra, corners with four equivalent Mn(4)O3F3 octahedra,  a cornercorner with one Mn(5)O4F trigonal bipyramid, edges with two equivalent Mg(1)O2F4 octahedra, and  an edgeedge with one Mn(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 32-60°. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one F(1), and one F(5) atom. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(5), one O(7), one F(1), one F(2), and one F(4) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(5)O4F trigonal bipyramid, corners with two equivalent Mn(1)O4F trigonal bipyramids,  an edgeedge with one Mn(6)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 32-60°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(4), one O(6), and one F(1) atom to form distorted MnO4F trigonal bipyramids that share  a cornercorner with one Mn(2)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, and corners with two equivalent Mn(1)O4F trigonal bipyramids. The corner-sharing octahedral tilt angles range from 49-77°. In the sixth Mn site, Mn(6) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(5) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, corners with three equivalent Mn(1)O4F trigonal bipyramids, and  an edgeedge with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(5) and one Mn(6) atom. In the second O site, O(2) is bonded to one Mn(1), one Mn(3), one Mn(5), and one Mn(6) atom to form distorted corner-sharing OMn4 tetrahedra. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom to form distorted OMgMn3 trigonal pyramids that share corners with two equivalent O(2)Mn4 tetrahedra,  a cornercorner with one O(5)MgMn3 trigonal pyramid, and  an edgeedge with one O(5)MgMn3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form OMgMn3 trigonal pyramids that share  a cornercorner with one O(2)Mn4 tetrahedra,  a cornercorner with one O(4)MgMn3 trigonal pyramid, and  an edgeedge with one O(4)MgMn3 trigonal pyramid. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the second F site, F(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 F site, F(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar 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 trigonal planar geometry to one Mg(1), one Mn(3), and one Mn(6) atom.
MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(4), one O(5), one F(1), one F(2), one F(4), and one F(5) atom to form MgO2F4 octahedra that share  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, edges with two equivalent Mn(2)O3F3 octahedra, and  a faceface with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Mg(1)-O(4) bond length is 2.00 Å. The Mg(1)-O(5) bond length is 2.03 Å. The Mg(1)-F(1) bond length is 2.15 Å. The Mg(1)-F(2) bond length is 2.04 Å. The Mg(1)-F(4) bond length is 1.96 Å. The Mg(1)-F(5) bond length is 1.99 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(6), one O(7), and one F(3) atom to form MnO4F trigonal bipyramids that share corners with two equivalent Mn(4)O3F3 octahedra, corners with three equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-64°. The Mn(1)-O(2) bond length is 2.00 Å. The Mn(1)-O(3) bond length is 1.96 Å. The Mn(1)-O(6) bond length is 1.95 Å. The Mn(1)-O(7) bond length is 2.07 Å. The Mn(1)-F(3) bond length is 2.09 Å. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), one O(5), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with two equivalent Mn(6)O3F3 octahedra, corners with four equivalent Mn(4)O3F3 octahedra,  a cornercorner with one Mn(5)O4F trigonal bipyramid, edges with two equivalent Mg(1)O2F4 octahedra, and  an edgeedge with one Mn(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 32-60°. The Mn(2)-O(3) bond length is 2.03 Å. The Mn(2)-O(4) bond length is 2.14 Å. The Mn(2)-O(5) bond length is 2.09 Å. The Mn(2)-F(2) bond length is 2.23 Å. The Mn(2)-F(3) bond length is 2.13 Å. The Mn(2)-F(4) bond length is 2.31 Å. In the third Mn site, Mn(3) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one F(1), and one F(5) atom. The Mn(3)-O(2) bond length is 2.02 Å. The Mn(3)-O(4) bond length is 2.06 Å. The Mn(3)-O(5) bond length is 1.99 Å. The Mn(3)-O(6) bond length is 1.99 Å. The Mn(3)-F(1) bond length is 2.61 Å. The Mn(3)-F(5) bond length is 2.17 Å. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(5), one O(7), one F(1), one F(2), and one F(4) atom to form distorted MnO3F3 octahedra that share  a cornercorner with one Mg(1)O2F4 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(5)O4F trigonal bipyramid, corners with two equivalent Mn(1)O4F trigonal bipyramids,  an edgeedge with one Mn(6)O3F3 octahedra, and  a faceface with one Mg(1)O2F4 octahedra. The corner-sharing octahedral tilt angles range from 32-60°. The Mn(4)-O(3) bond length is 1.92 Å. The Mn(4)-O(5) bond length is 2.01 Å. The Mn(4)-O(7) bond length is 1.92 Å. The Mn(4)-F(1) bond length is 2.20 Å. The Mn(4)-F(2) bond length is 2.32 Å. The Mn(4)-F(4) bond length is 2.10 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(4), one O(6), and one F(1) atom to form distorted MnO4F trigonal bipyramids that share  a cornercorner with one Mn(2)O3F3 octahedra,  a cornercorner with one Mn(4)O3F3 octahedra, corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, and corners with two equivalent Mn(1)O4F trigonal bipyramids. The corner-sharing octahedral tilt angles range from 49-77°. The Mn(5)-O(1) bond length is 1.82 Å. The Mn(5)-O(2) bond length is 2.32 Å. The Mn(5)-O(4) bond length is 2.03 Å. The Mn(5)-O(6) bond length is 2.04 Å. The Mn(5)-F(1) bond length is 2.02 Å. In the sixth Mn site, Mn(6) is bonded to one O(1), one O(2), one O(7), one F(2), one F(3), and one F(5) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mg(1)O2F4 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with two equivalent Mn(5)O4F trigonal bipyramids, corners with three equivalent Mn(1)O4F trigonal bipyramids, and  an edgeedge with one Mn(4)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 47-55°. The Mn(6)-O(1) bond length is 1.88 Å. The Mn(6)-O(2) bond length is 1.96 Å. The Mn(6)-O(7) bond length is 1.95 Å. The Mn(6)-F(2) bond length is 2.55 Å. The Mn(6)-F(3) bond length is 1.99 Å. The Mn(6)-F(5) bond length is 2.18 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mn(5) and one Mn(6) atom. In the second O site, O(2) is bonded to one Mn(1), one Mn(3), one Mn(5), and one Mn(6) atom to form distorted corner-sharing OMn4 tetrahedra. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom to form distorted OMgMn3 trigonal pyramids that share corners with two equivalent O(2)Mn4 tetrahedra,  a cornercorner with one O(5)MgMn3 trigonal pyramid, and  an edgeedge with one O(5)MgMn3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form OMgMn3 trigonal pyramids that share  a cornercorner with one O(2)Mn4 tetrahedra,  a cornercorner with one O(4)MgMn3 trigonal pyramid, and  an edgeedge with one O(4)MgMn3 trigonal pyramid. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the second F site, F(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 F site, F(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar 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 trigonal planar geometry to one Mg(1), one Mn(3), and one Mn(6) atom.