MgMn6(O2F)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(7), one O(8), one F(2), and one F(3) atom to form MgO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mn(2)O4F2 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, edges with two equivalent Mn(1)O4F2 octahedra, and faces with two equivalent Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-47°. 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(8), one F(2), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with four equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O4F2 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and edges with two equivalent Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. 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 corners with two equivalent Mn(5)O4F2 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O4F2 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  an edgeedge with one Mn(3)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), one O(6), one O(7), one F(1), and one F(2) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(5)O4F2 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 41-60°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(5), one O(8), one F(1), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. In the fifth Mn site, Mn(5) is bonded to one O(2), one O(4), one O(6), one O(7), one F(1), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(2)O4F2 octahedra, corners with four equivalent Mn(3)O4F2 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. In the sixth Mn site, Mn(6) is bonded to one O(1), one O(2), one O(7), one O(8), one F(2), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(1)O4F2 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and faces with two equivalent Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(6) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(5), 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(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a distorted 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 trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the second F site, F(2) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the third F site, F(3) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(5) atom.
MgMn6(O2F)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(7), one O(8), one F(2), and one F(3) atom to form MgO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mn(2)O4F2 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, edges with two equivalent Mn(1)O4F2 octahedra, and faces with two equivalent Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-47°. The Mg(1)-O(1) bond length is 2.06 Å. The Mg(1)-O(2) bond length is 2.02 Å. The Mg(1)-O(7) bond length is 2.06 Å. The Mg(1)-O(8) bond length is 2.02 Å. The Mg(1)-F(2) bond length is 1.99 Å. The Mg(1)-F(3) 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(8), one F(2), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with four equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O4F2 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and edges with two equivalent Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. The Mn(1)-O(2) bond length is 2.02 Å. The Mn(1)-O(3) bond length is 2.04 Å. The Mn(1)-O(6) bond length is 2.04 Å. The Mn(1)-O(8) bond length is 2.03 Å. The Mn(1)-F(2) bond length is 2.14 Å. The Mn(1)-F(3) bond length is 2.14 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 corners with two equivalent Mn(5)O4F2 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(4)O4F2 octahedra,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O4F2 octahedra, and  an edgeedge with one Mn(3)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. The Mn(2)-O(1) bond length is 2.39 Å. The Mn(2)-O(3) bond length is 1.98 Å. The Mn(2)-O(4) bond length is 1.88 Å. The Mn(2)-O(5) bond length is 2.00 Å. The Mn(2)-F(3) bond length is 2.03 Å. The Mn(2)-F(4) bond length is 2.22 Å. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), one O(6), one O(7), one F(1), and one F(2) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(4)O4F2 octahedra, corners with two equivalent Mn(6)O4F2 octahedra, corners with four equivalent Mn(5)O4F2 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 41-60°. The Mn(3)-O(4) bond length is 2.01 Å. The Mn(3)-O(5) bond length is 1.87 Å. The Mn(3)-O(6) bond length is 1.99 Å. The Mn(3)-O(7) bond length is 2.39 Å. The Mn(3)-F(1) bond length is 2.22 Å. The Mn(3)-F(2) bond length is 2.03 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(5), one O(8), one F(1), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(2)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. The Mn(4)-O(1) bond length is 1.92 Å. The Mn(4)-O(3) bond length is 2.00 Å. The Mn(4)-O(5) bond length is 2.16 Å. The Mn(4)-O(8) bond length is 2.23 Å. The Mn(4)-F(1) bond length is 2.25 Å. The Mn(4)-F(4) bond length is 1.97 Å. In the fifth Mn site, Mn(5) is bonded to one O(2), one O(4), one O(6), one O(7), one F(1), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O4F2 octahedra, corners with two equivalent Mn(2)O4F2 octahedra, corners with four equivalent Mn(3)O4F2 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra, and  an edgeedge with one Mn(6)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 41-60°. The Mn(5)-O(2) bond length is 2.26 Å. The Mn(5)-O(4) bond length is 2.13 Å. The Mn(5)-O(6) bond length is 1.99 Å. The Mn(5)-O(7) bond length is 1.93 Å. The Mn(5)-F(1) bond length is 1.98 Å. The Mn(5)-F(4) bond length is 2.25 Å. In the sixth Mn site, Mn(6) is bonded to one O(1), one O(2), one O(7), one O(8), one F(2), and one F(3) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(2)O4F2 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(1)O4F2 octahedra,  an edgeedge with one Mn(4)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and faces with two equivalent Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. The Mn(6)-O(1) bond length is 1.92 Å. The Mn(6)-O(2) bond length is 1.97 Å. The Mn(6)-O(7) bond length is 1.91 Å. The Mn(6)-O(8) bond length is 1.97 Å. The Mn(6)-F(2) bond length is 2.17 Å. The Mn(6)-F(3) bond length is 2.17 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Mn(6) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(5), 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(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a distorted 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 trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom. There are four inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the second F site, F(2) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the third F site, F(3) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form distorted corner-sharing FMgMn3 trigonal pyramids. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(5) atom.