MgMn6O7F5 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(6), one O(7), one F(1), one F(2), and one F(3) atom to form MgO3F3 octahedra that share  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra, edges with two equivalent Mn(4)O3F3 octahedra, edges with two equivalent Mn(6)O4F2 octahedra, and  a faceface with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and one F(2) atom. 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 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, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 36-54°. 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 MnO3F3 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. 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 distorted MnO3F3 octahedra that share corners with two equivalent Mn(3)O3F3 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  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 38-54°. In the fifth Mn site, Mn(5) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one F(4), and one F(5) atom. 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,  an edgeedge with one Mn(4)O3F3 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 36-53°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(2), one Mn(4), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), 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 T-shaped geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), 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 a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. 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(3), and one Mn(6) atom. In the second F site, F(2) is bonded in a 4-coordinate 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 3-coordinate geometry to one Mn(2), one Mn(4), and one Mn(5) atom. In the fifth F site, F(5) is bonded in a 3-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(2), one O(6), one O(7), one F(1), one F(2), and one F(3) atom to form MgO3F3 octahedra that share  a cornercorner with one Mn(2)O3F3 octahedra, corners with two equivalent Mn(3)O3F3 octahedra, edges with two equivalent Mn(4)O3F3 octahedra, edges with two equivalent Mn(6)O4F2 octahedra, and  a faceface with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. The Mg(1)-O(2) bond length is 2.04 Å. The Mg(1)-O(6) bond length is 2.14 Å. The Mg(1)-O(7) bond length is 2.00 Å. The Mg(1)-F(1) bond length is 1.98 Å. The Mg(1)-F(2) bond length is 2.01 Å. The Mg(1)-F(3) bond length is 2.10 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and one F(2) atom. The Mn(1)-O(3) bond length is 1.96 Å. The Mn(1)-O(5) bond length is 1.86 Å. The Mn(1)-O(6) bond length is 1.90 Å. The Mn(1)-O(7) bond length is 2.10 Å. The Mn(1)-F(2) bond length is 2.70 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 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, and  a faceface with one Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 36-54°. The Mn(2)-O(2) bond length is 2.01 Å. The Mn(2)-O(4) bond length is 1.89 Å. The Mn(2)-O(6) bond length is 1.97 Å. The Mn(2)-F(2) bond length is 2.19 Å. The Mn(2)-F(3) bond length is 2.29 Å. The Mn(2)-F(4) bond length is 2.00 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 MnO3F3 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(4)O3F3 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. The Mn(3)-O(1) bond length is 1.91 Å. The Mn(3)-O(4) bond length is 1.93 Å. The Mn(3)-O(5) bond length is 1.90 Å. The Mn(3)-F(1) bond length is 2.25 Å. The Mn(3)-F(3) bond length is 2.42 Å. The Mn(3)-F(5) bond length is 2.04 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 distorted MnO3F3 octahedra that share corners with two equivalent Mn(3)O3F3 octahedra, corners with four equivalent Mn(2)O3F3 octahedra,  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 38-54°. The Mn(4)-O(1) bond length is 1.88 Å. The Mn(4)-O(2) bond length is 1.96 Å. The Mn(4)-O(7) bond length is 2.06 Å. The Mn(4)-F(2) bond length is 2.49 Å. The Mn(4)-F(3) bond length is 2.19 Å. The Mn(4)-F(4) 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(3), one O(4), one O(5), one F(4), and one F(5) atom. The Mn(5)-O(1) bond length is 2.01 Å. The Mn(5)-O(3) bond length is 2.06 Å. The Mn(5)-O(4) bond length is 2.00 Å. The Mn(5)-O(5) bond length is 2.27 Å. The Mn(5)-F(4) bond length is 2.45 Å. The Mn(5)-F(5) bond length is 2.66 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,  an edgeedge with one Mn(4)O3F3 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 36-53°. The Mn(6)-O(2) bond length is 1.98 Å. The Mn(6)-O(3) bond length is 1.90 Å. The Mn(6)-O(6) bond length is 2.50 Å. The Mn(6)-O(7) bond length is 2.04 Å. The Mn(6)-F(1) bond length is 2.19 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 in a trigonal non-coplanar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(2), one Mn(4), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Mn(5), 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 T-shaped geometry to one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), 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 a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. 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(3), and one Mn(6) atom. In the second F site, F(2) is bonded in a 4-coordinate 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 3-coordinate geometry to one Mn(2), one Mn(4), and one Mn(5) atom. In the fifth F site, F(5) is bonded in a 3-coordinate geometry to one Mn(3), one Mn(5), and one Mn(6) atom.