MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(5), one O(7), one O(9), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Mn(3)O5F octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(1)O4F square pyramid,  a cornercorner with one Mn(4)O4F square pyramid,  a cornercorner with one Mn(5)O5 square pyramid,  an edgeedge with one Mn(5)O5 square pyramid,  a faceface with one Mn(3)O5F octahedra, and  a faceface with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-52°. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(6), one O(9), 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(3)O5F octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(4)O4F square pyramid, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles range from 49-75°. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(4)O4F square pyramid, corners with two equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(5)O5 square pyramids,  an edgeedge with one Mn(6)O4F2 octahedra,  an edgeedge with one Mn(3)O5F octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles are 45°. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(6), one O(7), one O(8), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(1)O4F square pyramid, corners with two equivalent Mn(4)O4F square pyramids, corners with two equivalent Mn(5)O5 square pyramids,  an edgeedge with one Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles are 49°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(2), one O(4), 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(2)O6 octahedra, corners with two equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(1)O4F square pyramid, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles range from 44-70°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(5), one O(8), 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(6)O4F2 octahedra, corners with two 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(1)O4F square pyramid, and  an edgeedge with one Mn(4)O4F square pyramid. The corner-sharing octahedral tilt angles range from 41-78°. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(4), one O(5), one O(6), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O5 square pyramid, corners with three equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(4)O4F square pyramids,  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 39-52°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the tenth O site, O(10) is bonded in a 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 a distorted T-shaped geometry to one Mg(1), one Mn(3), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom.
MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(3), one O(5), one O(7), one O(9), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Mn(3)O5F octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(6)O4F2 octahedra,  a cornercorner with one Mn(1)O4F square pyramid,  a cornercorner with one Mn(4)O4F square pyramid,  a cornercorner with one Mn(5)O5 square pyramid,  an edgeedge with one Mn(5)O5 square pyramid,  a faceface with one Mn(3)O5F octahedra, and  a faceface with one Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-52°. The Mg(1)-O(2) bond length is 2.03 Å. The Mg(1)-O(3) bond length is 2.06 Å. The Mg(1)-O(5) bond length is 2.11 Å. The Mg(1)-O(7) bond length is 2.09 Å. The Mg(1)-O(9) bond length is 1.99 Å. The Mg(1)-F(1) bond length is 2.04 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(6), one O(9), 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(3)O5F octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(4)O4F square pyramid, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles range from 49-75°. The Mn(1)-O(1) bond length is 1.93 Å. The Mn(1)-O(10) bond length is 1.93 Å. The Mn(1)-O(6) bond length is 2.02 Å. The Mn(1)-O(9) bond length is 2.00 Å. The Mn(1)-F(2) bond length is 2.08 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(4)O4F square pyramid, corners with two equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(5)O5 square pyramids,  an edgeedge with one Mn(6)O4F2 octahedra,  an edgeedge with one Mn(3)O5F octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles are 45°. The Mn(2)-O(1) bond length is 1.93 Å. The Mn(2)-O(3) bond length is 1.89 Å. The Mn(2)-O(4) bond length is 1.91 Å. The Mn(2)-O(5) bond length is 1.99 Å. The Mn(2)-O(7) bond length is 1.98 Å. The Mn(2)-O(9) bond length is 2.14 Å. In the third Mn site, Mn(3) is bonded to one O(2), one O(3), one O(6), one O(7), one O(8), and one F(1) atom to form MnO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra,  a cornercorner with one Mn(1)O4F square pyramid, corners with two equivalent Mn(4)O4F square pyramids, corners with two equivalent Mn(5)O5 square pyramids,  an edgeedge with one Mn(6)O4F2 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles are 49°. The Mn(3)-O(2) bond length is 2.15 Å. The Mn(3)-O(3) bond length is 1.93 Å. The Mn(3)-O(6) bond length is 1.91 Å. The Mn(3)-O(7) bond length is 1.84 Å. The Mn(3)-O(8) bond length is 1.92 Å. The Mn(3)-F(1) bond length is 2.09 Å. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(2), one O(4), 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(2)O6 octahedra, corners with two equivalent Mn(3)O5F octahedra, corners with three equivalent Mn(6)O4F2 octahedra,  an edgeedge with one Mn(1)O4F square pyramid, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles range from 44-70°. The Mn(4)-O(10) bond length is 1.93 Å. The Mn(4)-O(2) bond length is 1.98 Å. The Mn(4)-O(4) bond length is 2.08 Å. The Mn(4)-O(8) bond length is 1.94 Å. The Mn(4)-F(2) bond length is 2.04 Å. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(2), one O(5), one O(8), 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(6)O4F2 octahedra, corners with two 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(1)O4F square pyramid, and  an edgeedge with one Mn(4)O4F square pyramid. The corner-sharing octahedral tilt angles range from 41-78°. The Mn(5)-O(1) bond length is 1.94 Å. The Mn(5)-O(2) bond length is 1.98 Å. The Mn(5)-O(5) bond length is 2.16 Å. The Mn(5)-O(8) bond length is 1.93 Å. The Mn(5)-O(9) bond length is 1.95 Å. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(4), one O(5), one O(6), one F(1), and one F(2) atom to form MnO4F2 octahedra that share corners with two equivalent Mg(1)O5F octahedra,  a cornercorner with one Mn(5)O5 square pyramid, corners with three equivalent Mn(1)O4F square pyramids, corners with three equivalent Mn(4)O4F square pyramids,  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 39-52°. The Mn(6)-O(10) bond length is 1.97 Å. The Mn(6)-O(4) bond length is 1.93 Å. The Mn(6)-O(5) bond length is 2.00 Å. The Mn(6)-O(6) bond length is 1.97 Å. The Mn(6)-F(1) bond length is 2.17 Å. The Mn(6)-F(2) bond length is 2.14 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(5) atom. In the second O site, O(2) is bonded to one Mg(1), one Mn(3), one Mn(4), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mn(2), one Mn(5), and one Mn(6) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(6) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Mn(2), and one Mn(3) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Mn(3), one Mn(4), and one Mn(5) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(5) atom to form distorted corner-sharing OMgMn3 trigonal pyramids. In the tenth O site, O(10) is bonded in a 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 a distorted T-shaped geometry to one Mg(1), one Mn(3), and one Mn(6) atom. In the second F site, F(2) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(4), and one Mn(6) atom.