MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(4), one O(6), one O(8), one O(9), and one F(2) atom to form MgO5F octahedra that share corners with two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(5)O4F2 octahedra, edges with two equivalent Mn(6)O5F octahedra,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O4F2 octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5 square pyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 46-57°. 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 Mn(5)O4F2 octahedra, corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(4)O5F octahedra,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-58°. In the third Mn site, Mn(3) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(6)O5F octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5 square pyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 48-57°. 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 three equivalent Mn(2)O5 square pyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with two equivalent Mn(3)O5 trigonal bipyramids,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(6)O5F octahedra. 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  a cornercorner with one Mn(2)O5 square pyramid,  a cornercorner with one Mn(1)O5 trigonal bipyramid, corners with three equivalent Mn(3)O5 trigonal bipyramids,  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. 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 two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Mn(3)O5 trigonal bipyramid, corners with three equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(4)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(3), 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 trigonal non-coplanar geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. 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 edge and corner-sharing OMgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the tenth O site, O(10) is bonded in a distorted trigonal planar 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 an L-shaped geometry to one Mn(4) and one Mn(5) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Mg(1), 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(3), one O(4), one O(6), one O(8), one O(9), and one F(2) atom to form MgO5F octahedra that share corners with two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Mn(1)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(5)O4F2 octahedra, edges with two equivalent Mn(6)O5F octahedra,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. The Mg(1)-O(3) bond length is 1.96 Å. The Mg(1)-O(4) bond length is 2.09 Å. The Mg(1)-O(6) bond length is 2.18 Å. The Mg(1)-O(8) bond length is 2.09 Å. The Mg(1)-O(9) bond length is 2.13 Å. The Mg(1)-F(2) bond length is 1.95 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(4), one O(5), one O(8), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O4F2 octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5 square pyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 46-57°. The Mn(1)-O(10) bond length is 2.09 Å. The Mn(1)-O(4) bond length is 2.00 Å. The Mn(1)-O(5) bond length is 1.95 Å. The Mn(1)-O(8) bond length is 2.05 Å. The Mn(1)-O(9) bond length is 2.01 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 Mn(5)O4F2 octahedra, corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(6)O5F octahedra, corners with three equivalent Mn(4)O5F octahedra,  an edgeedge with one Mn(1)O5 trigonal bipyramid, and  an edgeedge with one Mn(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-58°. The Mn(2)-O(2) bond length is 2.22 Å. The Mn(2)-O(5) bond length is 1.95 Å. The Mn(2)-O(6) bond length is 2.00 Å. The Mn(2)-O(7) bond length is 1.95 Å. The Mn(2)-O(9) bond length is 2.00 Å. In the third Mn site, Mn(3) is bonded to one O(1), one O(4), one O(6), one O(7), and one O(8) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(6)O5F octahedra, corners with two equivalent Mn(4)O5F octahedra, corners with three equivalent Mn(5)O4F2 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5 square pyramid, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 48-57°. The Mn(3)-O(1) bond length is 2.01 Å. The Mn(3)-O(4) bond length is 2.04 Å. The Mn(3)-O(6) bond length is 2.00 Å. The Mn(3)-O(7) bond length is 1.94 Å. The Mn(3)-O(8) bond length is 1.98 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 three equivalent Mn(2)O5 square pyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with two equivalent Mn(3)O5 trigonal bipyramids,  an edgeedge with one Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(6)O5F octahedra. The Mn(4)-O(1) bond length is 1.93 Å. The Mn(4)-O(10) bond length is 1.92 Å. The Mn(4)-O(2) bond length is 1.91 Å. The Mn(4)-O(5) bond length is 1.98 Å. The Mn(4)-O(7) bond length is 1.98 Å. The Mn(4)-F(1) bond length is 2.04 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  a cornercorner with one Mn(2)O5 square pyramid,  a cornercorner with one Mn(1)O5 trigonal bipyramid, corners with three equivalent Mn(3)O5 trigonal bipyramids,  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 Mn(5)-O(1) bond length is 1.93 Å. The Mn(5)-O(3) bond length is 1.87 Å. The Mn(5)-O(6) bond length is 2.01 Å. The Mn(5)-O(8) bond length is 2.00 Å. The Mn(5)-F(1) bond length is 1.95 Å. The Mn(5)-F(2) bond length is 2.16 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 two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Mn(3)O5 trigonal bipyramid, corners with three equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Mn(5)O4F2 octahedra,  an edgeedge with one Mn(4)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The Mn(6)-O(10) bond length is 1.89 Å. The Mn(6)-O(2) bond length is 1.87 Å. The Mn(6)-O(3) bond length is 1.94 Å. The Mn(6)-O(4) bond length is 2.01 Å. The Mn(6)-O(9) bond length is 2.01 Å. The Mn(6)-F(2) bond length is 2.06 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(3), 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 trigonal non-coplanar geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(3), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(5) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(4) atom. 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 edge and corner-sharing OMgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form a mixture of edge and corner-sharing OMgMn3 trigonal pyramids. In the tenth O site, O(10) is bonded in a distorted trigonal planar 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 an L-shaped geometry to one Mn(4) and one Mn(5) atom. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(5), and one Mn(6) atom.