MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(5), one O(6), one O(7), one O(8), and one F(1) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O4F square pyramid,  a cornercorner with one Mn(2)O5 square pyramid, edges with two equivalent Mn(5)O4F2 octahedra, edges with two equivalent Mn(4)O5F octahedra,  an edgeedge with one Mn(3)O4F square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-52°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with four equivalent Mn(6)O5F octahedra,  an edgeedge with one Mn(3)O4F square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-60°. In the second Mn site, Mn(2) is bonded to one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O4F2 octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(4)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(3)O4F square pyramid. The corner-sharing octahedral tilt angles range from 48-61°. In the third Mn site, Mn(3) is bonded to one O(4), one O(6), one O(7), one O(8), and one F(2) atom to form distorted MnO4F square pyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(4)O5F octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 43-57°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(2), one O(5), one O(7), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O4F square pyramid, corners with three equivalent Mn(2)O5 square pyramids,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 52-58°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(3), one O(6), one O(8), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O5 square pyramid, corners with three equivalent Mn(3)O4F square pyramids,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 54-60°. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(2), one O(3), one O(4), one O(9), and one F(2) atom to form MnO5F octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O4F square pyramids, corners with two equivalent Mn(2)O5 square pyramids,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 46-51°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(4), and one Mn(5) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted water-like 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(1), one Mn(3), and one Mn(6) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(4), and one Mn(6) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped 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 T-shaped geometry to one Mn(3), one Mn(5), and one Mn(6) atom.
MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(5), one O(6), one O(7), one O(8), and one F(1) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O4F square pyramid,  a cornercorner with one Mn(2)O5 square pyramid, edges with two equivalent Mn(5)O4F2 octahedra, edges with two equivalent Mn(4)O5F octahedra,  an edgeedge with one Mn(3)O4F square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-52°. The Mg(1)-O(1) bond length is 1.97 Å. The Mg(1)-O(5) bond length is 2.12 Å. The Mg(1)-O(6) bond length is 2.09 Å. The Mg(1)-O(7) bond length is 2.08 Å. The Mg(1)-O(8) bond length is 2.18 Å. The Mg(1)-F(1) bond length is 1.94 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with four equivalent Mn(6)O5F octahedra,  an edgeedge with one Mn(3)O4F square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-60°. The Mn(1)-O(10) bond length is 2.45 Å. The Mn(1)-O(3) bond length is 2.68 Å. The Mn(1)-O(4) bond length is 1.95 Å. The Mn(1)-O(5) bond length is 1.98 Å. The Mn(1)-O(8) bond length is 2.01 Å. The Mn(1)-O(9) bond length is 1.93 Å. In the second Mn site, Mn(2) is bonded to one O(2), one O(5), one O(6), one O(7), and one O(9) atom to form distorted MnO5 square pyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O4F2 octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(4)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(3)O4F square pyramid. The corner-sharing octahedral tilt angles range from 48-61°. The Mn(2)-O(2) bond length is 2.00 Å. The Mn(2)-O(5) bond length is 1.99 Å. The Mn(2)-O(6) bond length is 2.09 Å. The Mn(2)-O(7) bond length is 1.99 Å. The Mn(2)-O(9) bond length is 1.95 Å. In the third Mn site, Mn(3) is bonded to one O(4), one O(6), one O(7), one O(8), and one F(2) atom to form distorted MnO4F square pyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(4)O5F octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 43-57°. The Mn(3)-O(4) bond length is 1.91 Å. The Mn(3)-O(6) bond length is 1.95 Å. The Mn(3)-O(7) bond length is 1.97 Å. The Mn(3)-O(8) bond length is 2.00 Å. The Mn(3)-F(2) bond length is 2.22 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(2), one O(5), one O(7), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O4F square pyramid, corners with three equivalent Mn(2)O5 square pyramids,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 52-58°. The Mn(4)-O(1) bond length is 1.98 Å. The Mn(4)-O(10) bond length is 1.87 Å. The Mn(4)-O(2) bond length is 1.95 Å. The Mn(4)-O(5) bond length is 2.07 Å. The Mn(4)-O(7) bond length is 2.07 Å. The Mn(4)-F(1) bond length is 2.15 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(3), one O(6), one O(8), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O5 square pyramid, corners with three equivalent Mn(3)O4F square pyramids,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 54-60°. The Mn(5)-O(1) bond length is 1.86 Å. The Mn(5)-O(3) bond length is 1.80 Å. The Mn(5)-O(6) bond length is 2.00 Å. The Mn(5)-O(8) bond length is 1.99 Å. The Mn(5)-F(1) bond length is 2.07 Å. The Mn(5)-F(2) bond length is 2.03 Å. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(2), one O(3), one O(4), one O(9), and one F(2) atom to form MnO5F octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with two equivalent Mn(3)O4F square pyramids, corners with two equivalent Mn(2)O5 square pyramids,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 46-51°. The Mn(6)-O(10) bond length is 1.91 Å. The Mn(6)-O(2) bond length is 1.88 Å. The Mn(6)-O(3) bond length is 1.96 Å. The Mn(6)-O(4) bond length is 1.96 Å. The Mn(6)-O(9) bond length is 1.95 Å. The Mn(6)-F(2) bond length is 2.07 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(4), and one Mn(5) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted water-like 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(1), one Mn(3), and one Mn(6) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(4) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom to form a mixture of distorted edge and corner-sharing OMgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(6) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Mn(1), one Mn(4), and one Mn(6) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted T-shaped 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 T-shaped geometry to one Mn(3), one Mn(5), and one Mn(6) atom.