MgMn6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(11), one O(2), one O(3), one O(6), one O(9), and one F(1) atom to form distorted MgO5F octahedra that share corners with two equivalent Mn(1)O5F octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  a cornercorner with one Mn(6)O5 trigonal bipyramid,  an edgeedge with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mn(6)O5 trigonal bipyramid, and faces with two equivalent Mn(3)O5F octahedra. The corner-sharing octahedral tilt angles range from 38-49°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(7), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with three equivalent Mn(5)O5 square pyramids, corners with three equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mn(3)O5F octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(11), one O(2), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with three equivalent Mn(5)O5 square pyramids, corners with three equivalent Mn(6)O5 trigonal bipyramids,  an edgeedge with one Mn(1)O5F octahedra, and  an edgeedge with one Mn(3)O5F octahedra. The corner-sharing octahedral tilt angles range from 38-49°. In the third Mn site, Mn(3) is bonded to one O(11), one O(2), one O(3), one O(6), one O(9), and one F(1) atom to form MnO5F octahedra that share corners with three equivalent Mn(4)O5 trigonal bipyramids, corners with three equivalent Mn(6)O5 trigonal bipyramids,  an edgeedge with one Mn(1)O5F octahedra,  an edgeedge with one Mn(2)O6 octahedra, and faces with two equivalent Mg(1)O5F octahedra. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra, corners with three equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(3)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(5)O5 square pyramid, and  an edgeedge with one Mn(6)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-76°. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO5 square pyramids that share corners with three equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mn(6)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-53°. In the sixth Mn site, Mn(6) is bonded to one O(2), one O(5), one O(6), one O(8), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra, corners with three equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(2)O6 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(5)O5 square pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 44-80°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Mn(1) and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(6) atom. 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(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), 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(5), and one Mn(6) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(6) atom to form a mixture of distorted corner and edge-sharing OMgMn3 trigonal pyramids. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(5), and one Mn(6) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(6) atom to form a mixture of corner and edge-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(2), and one Mn(5) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. F(1) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one Mn(3) atom.
MgMn6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(11), one O(2), one O(3), one O(6), one O(9), and one F(1) atom to form distorted MgO5F octahedra that share corners with two equivalent Mn(1)O5F octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(4)O5 trigonal bipyramid,  a cornercorner with one Mn(6)O5 trigonal bipyramid,  an edgeedge with one Mn(4)O5 trigonal bipyramid,  an edgeedge with one Mn(6)O5 trigonal bipyramid, and faces with two equivalent Mn(3)O5F octahedra. The corner-sharing octahedral tilt angles range from 38-49°. The Mg(1)-O(11) bond length is 2.01 Å. The Mg(1)-O(2) bond length is 2.14 Å. The Mg(1)-O(3) bond length is 2.16 Å. The Mg(1)-O(6) bond length is 1.95 Å. The Mg(1)-O(9) bond length is 2.02 Å. The Mg(1)-F(1) bond length is 2.06 Å. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(7), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with three equivalent Mn(5)O5 square pyramids, corners with three equivalent Mn(4)O5 trigonal bipyramids,  an edgeedge with one Mn(3)O5F octahedra, and  an edgeedge with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-45°. The Mn(1)-O(1) bond length is 1.81 Å. The Mn(1)-O(10) bond length is 1.91 Å. The Mn(1)-O(3) bond length is 2.06 Å. The Mn(1)-O(4) bond length is 1.95 Å. The Mn(1)-O(7) bond length is 1.98 Å. The Mn(1)-F(1) bond length is 2.13 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(11), one O(2), one O(5), and one O(8) atom to form MnO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with three equivalent Mn(5)O5 square pyramids, corners with three equivalent Mn(6)O5 trigonal bipyramids,  an edgeedge with one Mn(1)O5F octahedra, and  an edgeedge with one Mn(3)O5F octahedra. The corner-sharing octahedral tilt angles range from 38-49°. The Mn(2)-O(1) bond length is 1.88 Å. The Mn(2)-O(10) bond length is 1.91 Å. The Mn(2)-O(11) bond length is 1.95 Å. The Mn(2)-O(2) bond length is 2.10 Å. The Mn(2)-O(5) bond length is 1.96 Å. The Mn(2)-O(8) bond length is 1.97 Å. In the third Mn site, Mn(3) is bonded to one O(11), one O(2), one O(3), one O(6), one O(9), and one F(1) atom to form MnO5F octahedra that share corners with three equivalent Mn(4)O5 trigonal bipyramids, corners with three equivalent Mn(6)O5 trigonal bipyramids,  an edgeedge with one Mn(1)O5F octahedra,  an edgeedge with one Mn(2)O6 octahedra, and faces with two equivalent Mg(1)O5F octahedra. The Mn(3)-O(11) bond length is 1.87 Å. The Mn(3)-O(2) bond length is 1.85 Å. The Mn(3)-O(3) bond length is 1.93 Å. The Mn(3)-O(6) bond length is 2.01 Å. The Mn(3)-O(9) bond length is 1.95 Å. The Mn(3)-F(1) bond length is 2.03 Å. In the fourth Mn site, Mn(4) is bonded to one O(3), one O(4), one O(6), one O(7), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra, corners with three equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(3)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(5)O5 square pyramid, and  an edgeedge with one Mn(6)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-76°. The Mn(4)-O(3) bond length is 2.15 Å. The Mn(4)-O(4) bond length is 1.90 Å. The Mn(4)-O(6) bond length is 2.00 Å. The Mn(4)-O(7) bond length is 1.93 Å. The Mn(4)-O(9) bond length is 2.00 Å. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO5 square pyramids that share corners with three equivalent Mn(1)O5F octahedra, corners with three equivalent Mn(2)O6 octahedra,  an edgeedge with one Mn(4)O5 trigonal bipyramid, and  an edgeedge with one Mn(6)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-53°. The Mn(5)-O(10) bond length is 2.23 Å. The Mn(5)-O(4) bond length is 1.96 Å. The Mn(5)-O(5) bond length is 1.94 Å. The Mn(5)-O(7) bond length is 1.95 Å. The Mn(5)-O(8) bond length is 1.94 Å. In the sixth Mn site, Mn(6) is bonded to one O(2), one O(5), one O(6), one O(8), and one O(9) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O5F octahedra, corners with three equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(2)O6 octahedra,  an edgeedge with one Mg(1)O5F octahedra,  an edgeedge with one Mn(5)O5 square pyramid, and  an edgeedge with one Mn(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 44-80°. The Mn(6)-O(2) bond length is 2.19 Å. The Mn(6)-O(5) bond length is 1.88 Å. The Mn(6)-O(6) bond length is 1.99 Å. The Mn(6)-O(8) bond length is 1.91 Å. The Mn(6)-O(9) bond length is 2.00 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Mn(1) and one Mn(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(6) atom. 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(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), 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(5), and one Mn(6) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(6) atom to form a mixture of distorted corner and edge-sharing OMgMn3 trigonal pyramids. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(5), and one Mn(6) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(6) atom to form a mixture of corner and edge-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(2), and one Mn(5) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. F(1) is bonded in a T-shaped geometry to one Mg(1), one Mn(1), and one Mn(3) atom.