MgMn12(O7F5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(12), one O(13), one O(5), one F(1), one F(2), and one F(7) atom to form MgO3F3 octahedra that share corners with two equivalent Mn(7)O4F2 octahedra, corners with two equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and edges with two equivalent Mn(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-51°. There are twelve inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(5), one F(2), one F(6), and one F(7) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(7)O4F2 octahedra, corners with two equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. In the second Mn site, Mn(2) is bonded to one O(1), one O(11), one O(4), one F(1), one F(5), and one F(7) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(10)O4F2 octahedra, corners with four equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(3)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 46-72°. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(4), one O(7), one F(5), and one F(8) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(8)O3F3 octahedra, corners with two equivalent Mn(9)O4F2 octahedra, corners with four equivalent Mn(10)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(2), one O(6), one O(9), one F(10), and one F(9) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(8)O3F3 octahedra, corners with two equivalent Mn(7)O4F2 octahedra, corners with four equivalent Mn(12)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. In the fifth Mn site, Mn(5) is bonded to one O(13), one O(2), one O(5), one O(8), one F(10), and one F(6) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(12)O4F2 octahedra, corners with four equivalent Mn(7)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(4)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-65°. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(6), one F(3), one F(4), one F(8), and one F(9) atom to form MnO2F4 octahedra that share corners with two equivalent Mn(10)O4F2 octahedra, corners with two equivalent Mn(12)O4F2 octahedra, corners with four equivalent Mn(8)O3F3 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and  an edgeedge with one Mn(4)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. In the seventh Mn site, Mn(7) is bonded to one O(13), one O(14), one O(2), one O(8), one F(2), and one F(6) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(1)O3F3 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with four equivalent Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(12)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-65°. In the eighth Mn site, Mn(8) is bonded to one O(10), one O(3), one O(9), one F(3), one F(4), and one F(9) atom to form MnO3F3 octahedra that share corners with two equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with four equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mn(10)O4F2 octahedra, and  an edgeedge with one Mn(12)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. In the ninth Mn site, Mn(9) is bonded to one O(1), one O(11), one O(12), one O(7), one F(1), and one F(5) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(1)O3F3 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(10)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-72°. In the tenth Mn site, Mn(10) is bonded to one O(10), one O(11), one O(4), one O(7), one F(3), and one F(8) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with four equivalent Mn(3)O4F2 octahedra,  an edgeedge with one Mn(8)O3F3 octahedra, and  an edgeedge with one Mn(9)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 39-60°. In the eleventh Mn site, Mn(11) is bonded in a 5-coordinate geometry to one O(13), one O(5), one F(1), one F(6), and one F(7) atom. In the twelfth Mn site, Mn(12) is bonded to one O(14), one O(6), one O(8), one O(9), one F(10), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with four equivalent Mn(4)O4F2 octahedra,  an edgeedge with one Mn(8)O3F3 octahedra, and  an edgeedge with one Mn(7)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(9) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(4), one Mn(5), and one Mn(7) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(3), one Mn(6), and one Mn(8) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(11), and one Mn(5) atom to form OMgMn3 tetrahedra that share  a cornercorner with one O(13)MgMn3 tetrahedra,  an edgeedge with one O(13)MgMn3 tetrahedra, and  an edgeedge with one F(1)MgMn3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(10), one Mn(3), and one Mn(9) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(5), and one Mn(7) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(8) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(10), one Mn(3), and one Mn(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(2), and one Mn(9) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(1), and one Mn(9) atom. In the thirteenth O site, O(13) is bonded to one Mg(1), one Mn(11), one Mn(5), and one Mn(7) atom to form distorted OMgMn3 tetrahedra that share  a cornercorner with one O(5)MgMn3 tetrahedra, corners with two equivalent F(1)MgMn3 tetrahedra, and  an edgeedge with one O(5)MgMn3 tetrahedra. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(7) atom. There are ten inequivalent F sites. In the first F site, F(1) is bonded to one Mg(1), one Mn(11), one Mn(2), and one Mn(9) atom to form distorted FMgMn3 tetrahedra that share corners with two equivalent O(13)MgMn3 tetrahedra and  an edgeedge with one O(5)MgMn3 tetrahedra. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(1), and one Mn(7) atom. In the third F site, F(3) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(6), and one Mn(8) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(6), and one Mn(8) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(9) atom. In the sixth F site, F(6) is bonded in a rectangular see-saw-like geometry to one Mn(1), one Mn(11), one Mn(5), and one Mn(7) atom. In the seventh F site, F(7) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(11), and one Mn(2) atom. In the eighth F site, F(8) is bonded in a distorted T-shaped geometry to one Mn(10), one Mn(3), and one Mn(6) atom. In the ninth F site, F(9) is bonded in a distorted trigonal planar geometry to one Mn(4), one Mn(6), and one Mn(8) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Mn(12), one Mn(4), and one Mn(5) atom.
MgMn12(O7F5)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(12), one O(13), one O(5), one F(1), one F(2), and one F(7) atom to form MgO3F3 octahedra that share corners with two equivalent Mn(7)O4F2 octahedra, corners with two equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and edges with two equivalent Mn(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-51°. The Mg(1)-O(12) bond length is 1.98 Å. The Mg(1)-O(13) bond length is 2.07 Å. The Mg(1)-O(5) bond length is 2.03 Å. The Mg(1)-F(1) bond length is 2.03 Å. The Mg(1)-F(2) bond length is 1.96 Å. The Mg(1)-F(7) bond length is 2.08 Å. There are twelve inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(12), one O(5), one F(2), one F(6), and one F(7) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(7)O4F2 octahedra, corners with two equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mn(2)O3F3 octahedra,  an edgeedge with one Mn(5)O4F2 octahedra, and edges with two equivalent Mg(1)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. The Mn(1)-O(1) bond length is 1.94 Å. The Mn(1)-O(12) bond length is 1.85 Å. The Mn(1)-O(5) bond length is 1.93 Å. The Mn(1)-F(2) bond length is 2.16 Å. The Mn(1)-F(6) bond length is 2.29 Å. The Mn(1)-F(7) bond length is 2.18 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(11), one O(4), one F(1), one F(5), and one F(7) atom to form distorted MnO3F3 octahedra that share corners with two equivalent Mn(10)O4F2 octahedra, corners with four equivalent Mn(9)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(3)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 46-72°. The Mn(2)-O(1) bond length is 2.08 Å. The Mn(2)-O(11) bond length is 2.02 Å. The Mn(2)-O(4) bond length is 1.86 Å. The Mn(2)-F(1) bond length is 2.21 Å. The Mn(2)-F(5) bond length is 2.20 Å. The Mn(2)-F(7) bond length is 2.11 Å. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(4), one O(7), one F(5), and one F(8) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(8)O3F3 octahedra, corners with two equivalent Mn(9)O4F2 octahedra, corners with four equivalent Mn(10)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(2)O3F3 octahedra. The corner-sharing octahedral tilt angles range from 39-59°. The Mn(3)-O(10) bond length is 2.09 Å. The Mn(3)-O(3) bond length is 1.91 Å. The Mn(3)-O(4) bond length is 2.25 Å. The Mn(3)-O(7) bond length is 2.07 Å. The Mn(3)-F(5) bond length is 1.99 Å. The Mn(3)-F(8) bond length is 2.29 Å. In the fourth Mn site, Mn(4) is bonded to one O(14), one O(2), one O(6), one O(9), one F(10), and one F(9) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(8)O3F3 octahedra, corners with two equivalent Mn(7)O4F2 octahedra, corners with four equivalent Mn(12)O4F2 octahedra,  an edgeedge with one Mn(6)O2F4 octahedra, and  an edgeedge with one Mn(5)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. The Mn(4)-O(14) bond length is 2.11 Å. The Mn(4)-O(2) bond length is 1.91 Å. The Mn(4)-O(6) bond length is 2.11 Å. The Mn(4)-O(9) bond length is 2.04 Å. The Mn(4)-F(10) bond length is 2.27 Å. The Mn(4)-F(9) bond length is 2.01 Å. In the fifth Mn site, Mn(5) is bonded to one O(13), one O(2), one O(5), one O(8), one F(10), and one F(6) atom to form distorted MnO4F2 octahedra that share corners with two equivalent Mn(12)O4F2 octahedra, corners with four equivalent Mn(7)O4F2 octahedra,  an edgeedge with one Mg(1)O3F3 octahedra,  an edgeedge with one Mn(1)O3F3 octahedra, and  an edgeedge with one Mn(4)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-65°. The Mn(5)-O(13) bond length is 2.03 Å. The Mn(5)-O(2) bond length is 1.98 Å. The Mn(5)-O(5) bond length is 2.00 Å. The Mn(5)-O(8) bond length is 1.99 Å. The Mn(5)-F(10) bond length is 2.08 Å. The Mn(5)-F(6) bond length is 2.41 Å. In the sixth Mn site, Mn(6) is bonded to one O(3), one O(6), one F(3), one F(4), one F(8), and one F(9) atom to form MnO2F4 octahedra that share corners with two equivalent Mn(10)O4F2 octahedra, corners with two equivalent Mn(12)O4F2 octahedra, corners with four equivalent Mn(8)O3F3 octahedra,  an edgeedge with one Mn(3)O4F2 octahedra, and  an edgeedge with one Mn(4)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. The Mn(6)-O(3) bond length is 2.01 Å. The Mn(6)-O(6) bond length is 1.96 Å. The Mn(6)-F(3) bond length is 2.11 Å. The Mn(6)-F(4) bond length is 2.11 Å. The Mn(6)-F(8) bond length is 2.12 Å. The Mn(6)-F(9) bond length is 2.22 Å. In the seventh Mn site, Mn(7) is bonded to one O(13), one O(14), one O(2), one O(8), one F(2), and one F(6) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(1)O3F3 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with four equivalent Mn(5)O4F2 octahedra, and  an edgeedge with one Mn(12)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 43-65°. The Mn(7)-O(13) bond length is 2.06 Å. The Mn(7)-O(14) bond length is 1.88 Å. The Mn(7)-O(2) bond length is 2.09 Å. The Mn(7)-O(8) bond length is 2.08 Å. The Mn(7)-F(2) bond length is 2.06 Å. The Mn(7)-F(6) bond length is 2.29 Å. In the eighth Mn site, Mn(8) is bonded to one O(10), one O(3), one O(9), one F(3), one F(4), and one F(9) atom to form MnO3F3 octahedra that share corners with two equivalent Mn(3)O4F2 octahedra, corners with two equivalent Mn(4)O4F2 octahedra, corners with four equivalent Mn(6)O2F4 octahedra,  an edgeedge with one Mn(10)O4F2 octahedra, and  an edgeedge with one Mn(12)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. The Mn(8)-O(10) bond length is 1.95 Å. The Mn(8)-O(3) bond length is 1.93 Å. The Mn(8)-O(9) bond length is 1.98 Å. The Mn(8)-F(3) bond length is 2.20 Å. The Mn(8)-F(4) bond length is 2.14 Å. The Mn(8)-F(9) bond length is 2.13 Å. In the ninth Mn site, Mn(9) is bonded to one O(1), one O(11), one O(12), one O(7), one F(1), and one F(5) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O3F3 octahedra, corners with two equivalent Mn(1)O3F3 octahedra, corners with two equivalent Mn(3)O4F2 octahedra, corners with four equivalent Mn(2)O3F3 octahedra, and  an edgeedge with one Mn(10)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-72°. The Mn(9)-O(1) bond length is 2.06 Å. The Mn(9)-O(11) bond length is 2.04 Å. The Mn(9)-O(12) bond length is 1.93 Å. The Mn(9)-O(7) bond length is 1.94 Å. The Mn(9)-F(1) bond length is 2.37 Å. The Mn(9)-F(5) bond length is 2.19 Å. In the tenth Mn site, Mn(10) is bonded to one O(10), one O(11), one O(4), one O(7), one F(3), and one F(8) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with two equivalent Mn(2)O3F3 octahedra, corners with four equivalent Mn(3)O4F2 octahedra,  an edgeedge with one Mn(8)O3F3 octahedra, and  an edgeedge with one Mn(9)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 39-60°. The Mn(10)-O(10) bond length is 2.01 Å. The Mn(10)-O(11) bond length is 1.88 Å. The Mn(10)-O(4) bond length is 2.03 Å. The Mn(10)-O(7) bond length is 1.91 Å. The Mn(10)-F(3) bond length is 1.99 Å. The Mn(10)-F(8) bond length is 2.05 Å. In the eleventh Mn site, Mn(11) is bonded in a 5-coordinate geometry to one O(13), one O(5), one F(1), one F(6), and one F(7) atom. The Mn(11)-O(13) bond length is 2.07 Å. The Mn(11)-O(5) bond length is 1.92 Å. The Mn(11)-F(1) bond length is 2.40 Å. The Mn(11)-F(6) bond length is 2.15 Å. The Mn(11)-F(7) bond length is 2.08 Å. In the twelfth Mn site, Mn(12) is bonded to one O(14), one O(6), one O(8), one O(9), one F(10), and one F(4) atom to form MnO4F2 octahedra that share corners with two equivalent Mn(6)O2F4 octahedra, corners with two equivalent Mn(5)O4F2 octahedra, corners with four equivalent Mn(4)O4F2 octahedra,  an edgeedge with one Mn(8)O3F3 octahedra, and  an edgeedge with one Mn(7)O4F2 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. The Mn(12)-O(14) bond length is 2.12 Å. The Mn(12)-O(6) bond length is 2.00 Å. The Mn(12)-O(8) bond length is 1.85 Å. The Mn(12)-O(9) bond length is 1.90 Å. The Mn(12)-F(10) bond length is 2.04 Å. The Mn(12)-F(4) bond length is 2.04 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(9) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mn(4), one Mn(5), and one Mn(7) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mn(3), one Mn(6), and one Mn(8) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(2), and one Mn(3) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Mn(1), one Mn(11), and one Mn(5) atom to form OMgMn3 tetrahedra that share  a cornercorner with one O(13)MgMn3 tetrahedra,  an edgeedge with one O(13)MgMn3 tetrahedra, and  an edgeedge with one F(1)MgMn3 tetrahedra. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Mn(10), one Mn(3), and one Mn(9) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(5), and one Mn(7) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(8) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Mn(10), one Mn(3), and one Mn(8) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(2), and one Mn(9) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(1), and one Mn(9) atom. In the thirteenth O site, O(13) is bonded to one Mg(1), one Mn(11), one Mn(5), and one Mn(7) atom to form distorted OMgMn3 tetrahedra that share  a cornercorner with one O(5)MgMn3 tetrahedra, corners with two equivalent F(1)MgMn3 tetrahedra, and  an edgeedge with one O(5)MgMn3 tetrahedra. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(4), and one Mn(7) atom. There are ten inequivalent F sites. In the first F site, F(1) is bonded to one Mg(1), one Mn(11), one Mn(2), and one Mn(9) atom to form distorted FMgMn3 tetrahedra that share corners with two equivalent O(13)MgMn3 tetrahedra and  an edgeedge with one O(5)MgMn3 tetrahedra. In the second F site, F(2) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(1), and one Mn(7) atom. In the third F site, F(3) is bonded in a distorted trigonal planar geometry to one Mn(10), one Mn(6), and one Mn(8) atom. In the fourth F site, F(4) is bonded in a distorted trigonal planar geometry to one Mn(12), one Mn(6), and one Mn(8) atom. In the fifth F site, F(5) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(3), and one Mn(9) atom. In the sixth F site, F(6) is bonded in a rectangular see-saw-like geometry to one Mn(1), one Mn(11), one Mn(5), and one Mn(7) atom. In the seventh F site, F(7) is bonded in a see-saw-like geometry to one Mg(1), one Mn(1), one Mn(11), and one Mn(2) atom. In the eighth F site, F(8) is bonded in a distorted T-shaped geometry to one Mn(10), one Mn(3), and one Mn(6) atom. In the ninth F site, F(9) is bonded in a distorted trigonal planar geometry to one Mn(4), one Mn(6), and one Mn(8) atom. In the tenth F site, F(10) is bonded in a distorted T-shaped geometry to one Mn(12), one Mn(4), and one Mn(5) atom.