MgMn6(O2F)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(4), one O(7), one F(1), and one F(3) atom to form MgO4F2 octahedra that share  a cornercorner with one Mn(3)O4F2 octahedra, corners with two equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(6)O3F3 pentagonal pyramid,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(1)O5F octahedra,  an edgeedge with one Mn(4)O5 square pyramid,  a faceface with one Mn(3)O4F2 octahedra, and  a faceface with one Mn(6)O3F3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 41-45°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), one O(6), one O(7), one O(8), and one F(2) atom to form distorted MnO5F octahedra that share corners with two equivalent Mn(3)O4F2 octahedra, corners with three equivalent Mn(2)O3F3 octahedra, corners with three equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 38-49°. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(6), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with three equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O5F octahedra,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(3)O4F2 octahedra, and  an edgeedge with one Mn(6)O3F3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-51°. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(4), one O(5), one F(1), and one F(2) atom to form MnO4F2 octahedra that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(6)O3F3 pentagonal pyramid, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-53°. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O4F2 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with three equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-77°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(5), one O(6), one F(1), and one F(4) atom to form distorted MnO4F2 octahedra that share corners with three equivalent Mn(2)O3F3 octahedra, corners with three equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O5F octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 40-53°. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(7), one O(8), one F(1), one F(3), and one F(4) atom to form distorted MnO3F3 pentagonal pyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O5F octahedra, corners with two equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 37-67°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) 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 corner-sharing OMgMn3 trigonal pyramids. In the eighth O site, O(8) is bonded in a trigonal planar geometry to 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted T-shaped geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mg(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 Mn(2), one Mn(5), and one Mn(6) atom.
MgMn6(O2F)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(4), one O(7), one F(1), and one F(3) atom to form MgO4F2 octahedra that share  a cornercorner with one Mn(3)O4F2 octahedra, corners with two equivalent Mn(2)O3F3 octahedra,  a cornercorner with one Mn(6)O3F3 pentagonal pyramid,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(1)O5F octahedra,  an edgeedge with one Mn(4)O5 square pyramid,  a faceface with one Mn(3)O4F2 octahedra, and  a faceface with one Mn(6)O3F3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 41-45°. The Mg(1)-O(2) bond length is 2.02 Å. The Mg(1)-O(3) bond length is 2.07 Å. The Mg(1)-O(4) bond length is 2.16 Å. The Mg(1)-O(7) bond length is 2.02 Å. The Mg(1)-F(1) bond length is 2.04 Å. The Mg(1)-F(3) bond length is 2.03 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), one O(6), one O(7), one O(8), and one F(2) atom to form distorted MnO5F octahedra that share corners with two equivalent Mn(3)O4F2 octahedra, corners with three equivalent Mn(2)O3F3 octahedra, corners with three equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 38-49°. The Mn(1)-O(1) bond length is 1.97 Å. The Mn(1)-O(3) bond length is 2.70 Å. The Mn(1)-O(6) bond length is 1.98 Å. The Mn(1)-O(7) bond length is 2.03 Å. The Mn(1)-O(8) bond length is 1.97 Å. The Mn(1)-F(2) bond length is 2.28 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(4), one O(6), one F(2), one F(3), and one F(4) atom to form MnO3F3 octahedra that share corners with two equivalent Mg(1)O4F2 octahedra, corners with three equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O5F octahedra,  a cornercorner with one Mn(4)O5 square pyramid,  an edgeedge with one Mn(3)O4F2 octahedra, and  an edgeedge with one Mn(6)O3F3 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-51°. The Mn(2)-O(1) bond length is 1.95 Å. The Mn(2)-O(4) bond length is 2.00 Å. The Mn(2)-O(6) bond length is 1.97 Å. The Mn(2)-F(2) bond length is 2.23 Å. The Mn(2)-F(3) bond length is 2.12 Å. The Mn(2)-F(4) bond length is 2.12 Å. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(4), one O(5), one F(1), and one F(2) atom to form MnO4F2 octahedra that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(6)O3F3 pentagonal pyramid, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 38-53°. The Mn(3)-O(2) bond length is 2.07 Å. The Mn(3)-O(3) bond length is 1.89 Å. The Mn(3)-O(4) bond length is 1.95 Å. The Mn(3)-O(5) bond length is 1.91 Å. The Mn(3)-F(1) bond length is 2.09 Å. The Mn(3)-F(2) bond length is 1.96 Å. In the fourth Mn site, Mn(4) is bonded to one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O4F2 octahedra,  a cornercorner with one Mn(2)O3F3 octahedra, corners with three equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-77°. The Mn(4)-O(2) bond length is 1.97 Å. The Mn(4)-O(4) bond length is 2.39 Å. The Mn(4)-O(5) bond length is 1.94 Å. The Mn(4)-O(7) bond length is 1.99 Å. The Mn(4)-O(8) bond length is 1.95 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(5), one O(6), one F(1), and one F(4) atom to form distorted MnO4F2 octahedra that share corners with three equivalent Mn(2)O3F3 octahedra, corners with three equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(6)O3F3 pentagonal pyramids,  an edgeedge with one Mg(1)O4F2 octahedra,  an edgeedge with one Mn(1)O5F octahedra, and  an edgeedge with one Mn(4)O5 square pyramid. The corner-sharing octahedral tilt angles range from 40-53°. The Mn(5)-O(1) bond length is 1.96 Å. The Mn(5)-O(2) bond length is 2.01 Å. The Mn(5)-O(5) bond length is 1.95 Å. The Mn(5)-O(6) bond length is 1.94 Å. The Mn(5)-F(1) bond length is 2.63 Å. The Mn(5)-F(4) bond length is 2.18 Å. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(7), one O(8), one F(1), one F(3), and one F(4) atom to form distorted MnO3F3 pentagonal pyramids that share  a cornercorner with one Mg(1)O4F2 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with three equivalent Mn(1)O5F octahedra, corners with two equivalent Mn(4)O5 square pyramids,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and  a faceface with one Mg(1)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 37-67°. The Mn(6)-O(3) bond length is 1.92 Å. The Mn(6)-O(7) bond length is 2.07 Å. The Mn(6)-O(8) bond length is 1.93 Å. The Mn(6)-F(1) bond length is 2.34 Å. The Mn(6)-F(3) bond length is 2.20 Å. The Mn(6)-F(4) bond length is 2.02 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) 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 corner-sharing OMgMn3 trigonal pyramids. In the eighth O site, O(8) is bonded in a trigonal planar geometry to 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 4-coordinate geometry to one Mg(1), one Mn(3), one Mn(5), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted T-shaped geometry to one Mn(1), one Mn(2), and one Mn(3) atom. In the third F site, F(3) is bonded in a distorted T-shaped geometry to one Mg(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 Mn(2), one Mn(5), and one Mn(6) atom.