MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(6), one O(7), one O(8), and one F(2) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O4F square pyramids,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, edges with two equivalent Mn(3)O5F octahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(5), one O(8), one O(9), and one F(1) atom to form distorted MnO4F square pyramids that share  a cornercorner with one Mn(3)O5F octahedra, corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(2)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 39-63°. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(4), one O(6), one O(8), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O4F square pyramids,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(3)O5F octahedra, and  an edgeedge with one Mn(6)O5F octahedra. In the third Mn site, Mn(3) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one F(2) atom to form MnO5F octahedra that share  a cornercorner with one Mn(1)O4F square pyramid, corners with two equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(3), one O(7), 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(2)O5F octahedra, corners with two equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra, and  an edgeedge with one Mn(1)O4F square pyramid. The corner-sharing octahedral tilt angles range from 45-61°. In the fifth Mn site, Mn(5) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(7), one O(8), and one F(1) atom. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(3), one O(4), one O(5), one O(9), and one F(2) atom to form MnO5F octahedra that share corners with three equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra, and  an edgeedge with one Mn(3)O5F octahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form edge-sharing OMgMn3 trigonal pyramids. In the second O site, O(2) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(5), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom to form edge-sharing OMgMn3 trigonal pyramids. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second F site, F(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(3), 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(10), one O(6), one O(7), one O(8), and one F(2) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O4F square pyramids,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, edges with two equivalent Mn(3)O5F octahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. The Mg(1)-O(1) bond length is 2.06 Å. The Mg(1)-O(10) bond length is 2.15 Å. The Mg(1)-O(6) bond length is 1.99 Å. The Mg(1)-O(7) bond length is 2.07 Å. The Mg(1)-O(8) bond length is 2.25 Å. The Mg(1)-F(2) bond length is 1.97 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(5), one O(8), one O(9), and one F(1) atom to form distorted MnO4F square pyramids that share  a cornercorner with one Mn(3)O5F octahedra, corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Mn(2)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 39-63°. The Mn(1)-O(10) bond length is 2.01 Å. The Mn(1)-O(5) bond length is 2.16 Å. The Mn(1)-O(8) bond length is 2.03 Å. The Mn(1)-O(9) bond length is 1.92 Å. The Mn(1)-F(1) bond length is 2.06 Å. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(4), one O(6), one O(8), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O4F square pyramids,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(3)O5F octahedra, and  an edgeedge with one Mn(6)O5F octahedra. The Mn(2)-O(2) bond length is 1.87 Å. The Mn(2)-O(3) bond length is 1.91 Å. The Mn(2)-O(4) bond length is 1.97 Å. The Mn(2)-O(6) bond length is 1.94 Å. The Mn(2)-O(8) bond length is 1.92 Å. The Mn(2)-F(1) bond length is 2.02 Å. In the third Mn site, Mn(3) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one F(2) atom to form MnO5F octahedra that share  a cornercorner with one Mn(1)O4F square pyramid, corners with two equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mn(2)O5F octahedra,  an edgeedge with one Mn(6)O5F octahedra, and edges with two equivalent Mg(1)O5F octahedra. The Mn(3)-O(1) bond length is 2.01 Å. The Mn(3)-O(2) bond length is 1.89 Å. The Mn(3)-O(5) bond length is 1.97 Å. The Mn(3)-O(6) bond length is 1.86 Å. The Mn(3)-O(7) bond length is 2.01 Å. The Mn(3)-F(2) bond length is 2.05 Å. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(3), one O(7), 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(2)O5F octahedra, corners with two equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(6)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra, and  an edgeedge with one Mn(1)O4F square pyramid. The corner-sharing octahedral tilt angles range from 45-61°. The Mn(4)-O(1) bond length is 2.04 Å. The Mn(4)-O(10) bond length is 2.02 Å. The Mn(4)-O(3) bond length is 2.05 Å. The Mn(4)-O(7) bond length is 2.02 Å. The Mn(4)-O(9) bond length is 1.97 Å. In the fifth Mn site, Mn(5) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(7), one O(8), and one F(1) atom. The Mn(5)-O(1) bond length is 2.01 Å. The Mn(5)-O(4) bond length is 1.97 Å. The Mn(5)-O(7) bond length is 1.99 Å. The Mn(5)-O(8) bond length is 2.05 Å. The Mn(5)-F(1) bond length is 2.20 Å. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(3), one O(4), one O(5), one O(9), and one F(2) atom to form MnO5F octahedra that share corners with three equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(2)O5F octahedra, and  an edgeedge with one Mn(3)O5F octahedra. The Mn(6)-O(10) bond length is 2.03 Å. The Mn(6)-O(3) bond length is 1.95 Å. The Mn(6)-O(4) bond length is 1.86 Å. The Mn(6)-O(5) bond length is 1.94 Å. The Mn(6)-O(9) bond length is 1.93 Å. The Mn(6)-F(2) bond length is 2.08 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form edge-sharing OMgMn3 trigonal pyramids. In the second O site, O(2) is bonded in a water-like geometry to one Mn(2) and one Mn(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(5), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom. In the tenth O site, O(10) is bonded to one Mg(1), one Mn(1), one Mn(4), and one Mn(6) atom to form edge-sharing OMgMn3 trigonal pyramids. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second F site, F(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(3), and one Mn(6) atom.