The material described by MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(5), one O(7), one O(8), one O(9), and one F(1) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O5 square pyramids,  a cornercorner with one Mn(3)O4F trigonal bipyramid, edges with two equivalent Mn(5)O5F octahedra, edges with two equivalent Mn(6)O5F octahedra, and  an edgeedge with one Mn(3)O4F trigonal bipyramid. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form MnO5 square pyramids that share  a cornercorner with one Mn(5)O5F 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, and  an edgeedge with one Mn(3)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-59°. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(10), one O(4), one O(7), one O(8), and one F(1) atom. In the third Mn site, Mn(3) is bonded to one O(1), one O(5), one O(6), one O(7), and one F(1) atom to form distorted MnO4F 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)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra, and  an edgeedge with one Mn(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 43-62°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one F(2) atom to form MnO5F octahedra that share corners with three equivalent Mn(1)O5 square pyramids, corners with two equivalent Mn(3)O4F trigonal bipyramids,  an edgeedge with one Mn(5)O5F 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(5), one O(7), one O(9), and one F(2) atom to form MnO5F octahedra that share  a cornercorner with one Mn(1)O5 square pyramid, corners with three equivalent Mn(3)O4F 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(8), one O(9), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O5 square pyramids,  a cornercorner with one Mn(3)O4F trigonal bipyramid,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(5)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 distorted 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(1), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted 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 in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) 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 eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form distorted OMgMn3 trigonal pyramids that share corners with three equivalent F(1)MgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(6) atom to form FMgMn3 trigonal pyramids that share corners with three equivalent O(8)MgMn3 trigonal pyramids. In the second F site, F(2) is bonded in an L-shaped geometry to one Mn(4) and one Mn(5) atom. is represented by the CIF file [CIF]
data_MgMn6(O5F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.137
_cell_length_b   7.495
_cell_length_c   5.787
_cell_angle_alpha   98.773
_cell_angle_beta   99.742
_cell_angle_gamma   84.228
_symmetry_Int_Tables_number   1
_cell_volume   216.383
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.508  0.170  0.177  1.0
  Mn  Mn1  1  0.550  0.671  0.140  1.0
  Mn  Mn2  1  0.388  0.956  0.540  1.0
  Mn  Mn3  1  0.564  0.368  0.765  1.0
  Mn  Mn4  1  0.980  0.661  0.673  1.0
  Mn  Mn5  1  0.009  0.324  0.322  1.0
  Mn  Mn6  1  0.015  0.983  0.009  1.0
  O  O7  1  0.866  0.418  0.610  1.0
  O  O8  1  0.853  0.755  0.960  1.0
  O  O9  1  0.884  0.094  0.298  1.0
  O  O10  1  0.660  0.745  0.476  1.0
  O  O11  1  0.674  0.410  0.123  1.0
  O  O12  1  0.337  0.580  0.838  1.0
  O  O13  1  0.357  0.240  0.490  1.0
  O  O14  1  0.353  0.912  0.177  1.0
  O  O15  1  0.135  0.222  0.034  1.0
  O  O16  1  0.111  0.896  0.712  1.0
  F  F17  1  0.637  0.089  0.850  1.0
  F  F18  1  0.132  0.570  0.367  1.0
[/CIF]
.
The material described by MgMn6(O5F)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(3), one O(5), one O(7), one O(8), one O(9), and one F(1) atom to form MgO5F octahedra that share corners with two equivalent Mn(1)O5 square pyramids,  a cornercorner with one Mn(3)O4F trigonal bipyramid, edges with two equivalent Mn(5)O5F octahedra, edges with two equivalent Mn(6)O5F octahedra, and  an edgeedge with one Mn(3)O4F trigonal bipyramid. There are six inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form MnO5 square pyramids that share  a cornercorner with one Mn(5)O5F 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, and  an edgeedge with one Mn(3)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-59°. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(10), one O(4), one O(7), one O(8), and one F(1) atom. In the third Mn site, Mn(3) is bonded to one O(1), one O(5), one O(6), one O(7), and one F(1) atom to form distorted MnO4F 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)O5F octahedra,  an edgeedge with one Mg(1)O5F octahedra, and  an edgeedge with one Mn(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 43-62°. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one F(2) atom to form MnO5F octahedra that share corners with three equivalent Mn(1)O5 square pyramids, corners with two equivalent Mn(3)O4F trigonal bipyramids,  an edgeedge with one Mn(5)O5F 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(5), one O(7), one O(9), and one F(2) atom to form MnO5F octahedra that share  a cornercorner with one Mn(1)O5 square pyramid, corners with three equivalent Mn(3)O4F 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(8), one O(9), and one F(1) atom to form MnO5F octahedra that share corners with two equivalent Mn(1)O5 square pyramids,  a cornercorner with one Mn(3)O4F trigonal bipyramid,  an edgeedge with one Mn(4)O5F octahedra,  an edgeedge with one Mn(5)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 distorted 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(1), one Mn(4), and one Mn(6) atom. In the third O site, O(3) is bonded in a distorted 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 in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(3), and one Mn(5) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) 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 eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Mn(6) atom to form distorted OMgMn3 trigonal pyramids that share corners with three equivalent F(1)MgMn3 trigonal pyramids. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mn(5), and one Mn(6) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(2), one Mn(4), and one Mn(6) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded to one Mg(1), one Mn(2), one Mn(3), and one Mn(6) atom to form FMgMn3 trigonal pyramids that share corners with three equivalent O(8)MgMn3 trigonal pyramids. In the second F site, F(2) is bonded in an L-shaped geometry to one Mn(4) and one Mn(5) atom. is represented by the CIF file [CIF]
data_MgMn6(O5F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.137
_cell_length_b   7.495
_cell_length_c   5.787
_cell_angle_alpha   98.773
_cell_angle_beta   99.742
_cell_angle_gamma   84.228
_symmetry_Int_Tables_number   1
_cell_volume   216.383
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.508  0.170  0.177  1.0
  Mn  Mn1  1  0.550  0.671  0.140  1.0
  Mn  Mn2  1  0.388  0.956  0.540  1.0
  Mn  Mn3  1  0.564  0.368  0.765  1.0
  Mn  Mn4  1  0.980  0.661  0.673  1.0
  Mn  Mn5  1  0.009  0.324  0.322  1.0
  Mn  Mn6  1  0.015  0.983  0.009  1.0
  O  O7  1  0.866  0.418  0.610  1.0
  O  O8  1  0.853  0.755  0.960  1.0
  O  O9  1  0.884  0.094  0.298  1.0
  O  O10  1  0.660  0.745  0.476  1.0
  O  O11  1  0.674  0.410  0.123  1.0
  O  O12  1  0.337  0.580  0.838  1.0
  O  O13  1  0.357  0.240  0.490  1.0
  O  O14  1  0.353  0.912  0.177  1.0
  O  O15  1  0.135  0.222  0.034  1.0
  O  O16  1  0.111  0.896  0.712  1.0
  F  F17  1  0.637  0.089  0.850  1.0
  F  F18  1  0.132  0.570  0.367  1.0
[/CIF]
.