MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(4), one O(5), one O(6), one F(1), and one F(4) atom to form MgO4F2 octahedra that share  a cornercorner with one Mn(2)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra,  a cornercorner with one Mn(3)O3F2 trigonal bipyramid,  a cornercorner with one Mn(4)O3F2 trigonal bipyramid,  an edgeedge with one Mn(3)O3F2 trigonal bipyramid,  an edgeedge with one Mn(4)O3F2 trigonal bipyramid, and  a faceface with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-48°. 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), one F(2), and one F(3) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with four equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(4)O3F2 trigonal bipyramids,  an edgeedge with one Mn(2)O4F2 octahedra, and  an edgeedge with one Mn(3)O3F2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-57°. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(4), one O(5), one F(3), and one F(4) atom to form distorted MnO4F2 octahedra that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, corners with three equivalent Mn(4)O3F2 trigonal bipyramids,  an edgeedge with one Mn(1)O4F2 octahedra,  an edgeedge with one Mn(3)O3F2 trigonal bipyramid, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-52°. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), one O(6), one F(2), and one F(5) atom to form distorted MnO3F2 trigonal bipyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  an edgeedge with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(7), one F(1), and one F(4) atom to form distorted MnO3F2 trigonal bipyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra, and  an edgeedge with one Mn(6)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 44-69°. In the fifth Mn site, Mn(5) is bonded in a 6-coordinate geometry to one O(2), one O(6), one O(7), one F(1), one F(2), and one F(5) atom. 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 MnO3F3 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with four equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(3)O3F2 trigonal bipyramids, and  an edgeedge with one Mn(4)O3F2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-57°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the third O site, O(3) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form distorted corner-sharing OMgMn3 tetrahedra. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mn(1), one Mn(4), one Mn(5), and one Mn(6) 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(4), and one Mn(5) atom. In the second F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a 2-coordinate 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(3), one O(4), one O(5), one O(6), one F(1), and one F(4) atom to form MgO4F2 octahedra that share  a cornercorner with one Mn(2)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra,  a cornercorner with one Mn(3)O3F2 trigonal bipyramid,  a cornercorner with one Mn(4)O3F2 trigonal bipyramid,  an edgeedge with one Mn(3)O3F2 trigonal bipyramid,  an edgeedge with one Mn(4)O3F2 trigonal bipyramid, and  a faceface with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-48°. The Mg(1)-O(3) bond length is 2.19 Å. The Mg(1)-O(4) bond length is 2.00 Å. The Mg(1)-O(5) bond length is 2.05 Å. The Mg(1)-O(6) bond length is 2.15 Å. The Mg(1)-F(1) bond length is 2.04 Å. The Mg(1)-F(4) bond length is 2.04 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), one F(2), and one F(3) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with four equivalent Mn(6)O3F3 octahedra, corners with two equivalent Mn(4)O3F2 trigonal bipyramids,  an edgeedge with one Mn(2)O4F2 octahedra, and  an edgeedge with one Mn(3)O3F2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-57°. The Mn(1)-O(2) bond length is 1.94 Å. The Mn(1)-O(3) bond length is 1.96 Å. The Mn(1)-O(6) bond length is 2.05 Å. The Mn(1)-O(7) bond length is 2.06 Å. The Mn(1)-F(2) bond length is 2.45 Å. The Mn(1)-F(3) bond length is 2.25 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(4), one O(5), one F(3), and one F(4) atom to form distorted MnO4F2 octahedra that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 octahedra, corners with three equivalent Mn(4)O3F2 trigonal bipyramids,  an edgeedge with one Mn(1)O4F2 octahedra,  an edgeedge with one Mn(3)O3F2 trigonal bipyramid, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-52°. The Mn(2)-O(1) bond length is 2.03 Å. The Mn(2)-O(3) bond length is 2.01 Å. The Mn(2)-O(4) bond length is 1.90 Å. The Mn(2)-O(5) bond length is 1.94 Å. The Mn(2)-F(3) bond length is 2.01 Å. The Mn(2)-F(4) bond length is 2.37 Å. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), one O(6), one F(2), and one F(5) atom to form distorted MnO3F2 trigonal bipyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  an edgeedge with one Mn(2)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-52°. The Mn(3)-O(4) bond length is 1.87 Å. The Mn(3)-O(5) bond length is 1.92 Å. The Mn(3)-O(6) bond length is 1.97 Å. The Mn(3)-F(2) bond length is 2.04 Å. The Mn(3)-F(5) bond length is 2.08 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(7), one F(1), and one F(4) atom to form distorted MnO3F2 trigonal bipyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with three equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra, and  an edgeedge with one Mn(6)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 44-69°. The Mn(4)-O(1) bond length is 1.88 Å. The Mn(4)-O(3) bond length is 2.18 Å. The Mn(4)-O(7) bond length is 2.00 Å. The Mn(4)-F(1) bond length is 2.14 Å. The Mn(4)-F(4) bond length is 1.93 Å. In the fifth Mn site, Mn(5) is bonded in a 6-coordinate geometry to one O(2), one O(6), one O(7), one F(1), one F(2), and one F(5) atom. The Mn(5)-O(2) bond length is 1.99 Å. The Mn(5)-O(6) bond length is 2.03 Å. The Mn(5)-O(7) bond length is 2.44 Å. The Mn(5)-F(1) bond length is 2.15 Å. The Mn(5)-F(2) bond length is 2.25 Å. The Mn(5)-F(5) bond length is 2.66 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 MnO3F3 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with four equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(3)O3F2 trigonal bipyramids, and  an edgeedge with one Mn(4)O3F2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-57°. The Mn(6)-O(1) bond length is 1.90 Å. The Mn(6)-O(2) bond length is 1.94 Å. The Mn(6)-O(7) bond length is 2.08 Å. The Mn(6)-F(2) bond length is 2.24 Å. The Mn(6)-F(3) bond length is 2.21 Å. The Mn(6)-F(5) bond length is 1.98 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), and one Mn(6) atom. In the third O site, O(3) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form distorted corner-sharing OMgMn3 tetrahedra. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mn(1), one Mn(4), one Mn(5), and one Mn(6) 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(4), and one Mn(5) atom. In the second F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the fourth F site, F(4) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fifth F site, F(5) is bonded in a 2-coordinate geometry to one Mn(3), one Mn(5), and one Mn(6) atom.