The crystal structure described by MgFe6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(11), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MgO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids,  a cornercorner with one Fe(6)O4F trigonal bipyramid,  a cornercorner with one Fe(2)O5 trigonal bipyramid,  an edgeedge with one Fe(5)O5F octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(6)O4F trigonal bipyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Fe(5)O5F octahedra,  an edgeedge with one Fe(4)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(3), one O(4), one O(6), and one O(7) atom to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(3)O4F square pyramid, and  an edgeedge with one Fe(6)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-60°. In the third Fe site, Fe(3) is bonded to one O(4), one O(5), one O(6), one O(8), and one F(1) atom to form distorted FeO4F square pyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(6)O4F trigonal bipyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-63°. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(5)O5F octahedra, and  an edgeedge with one Fe(1)O6 octahedra. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(2), one O(7), one O(8), one O(9), and one F(1) atom to form FeO5F octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(3), one O(5), one O(7), and one F(1) atom to form distorted FeO4F trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(3)O4F square pyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 49-61°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(5) atom. In the second O site, O(2) is bonded in a water-like geometry to one Fe(4) and one Fe(5) atom. In the third O site, O(3) is bonded to one Mg(1), one Fe(2), one Fe(4), and one Fe(6) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Fe(1), one Fe(2), and one Fe(3) atom to form a mixture of corner and edge-sharing OMgFe3 trigonal pyramids. In the fifth O site, O(5) is bonded in a see-saw-like geometry to one Mg(1), one Fe(1), one Fe(3), and one Fe(6) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Fe(2), one Fe(5), and one Fe(6) atom to form a mixture of corner and edge-sharing OMgFe3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Fe(3), one Fe(4), and one Fe(5) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(4), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(4) atom. F(1) is bonded in a distorted trigonal planar geometry to one Fe(3), one Fe(5), and one Fe(6) atom. is represented by the CIF file [CIF]
data_MgFe6O11F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.186
_cell_length_b   5.812
_cell_length_c   5.919
_cell_angle_alpha   81.729
_cell_angle_beta   68.376
_cell_angle_gamma   73.188
_symmetry_Int_Tables_number   1
_cell_volume   219.773
_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  0.845  0.660  0.160  1.0
  Fe  Fe1  1  0.826  0.678  0.666  1.0
  Fe  Fe2  1  0.662  0.261  0.422  1.0
  Fe  Fe3  1  0.323  0.714  0.589  1.0
  Fe  Fe4  1  0.170  0.322  0.352  1.0
  Fe  Fe5  1  0.502  0.006  0.017  1.0
  Fe  Fe6  1  0.982  0.091  0.937  1.0
  O  O7  1  0.674  0.031  0.685  1.0
  O  O8  1  0.351  0.322  0.032  1.0
  O  O9  1  0.945  0.288  0.200  1.0
  O  O10  1  0.629  0.599  0.521  1.0
  O  O11  1  0.028  0.764  0.803  1.0
  O  O12  1  0.371  0.405  0.471  1.0
  O  O13  1  0.716  0.039  0.161  1.0
  O  O14  1  0.308  0.977  0.343  1.0
  O  O15  1  0.639  0.676  0.994  1.0
  O  O16  1  0.975  0.319  0.673  1.0
  O  O17  1  0.025  0.662  0.350  1.0
  F  F18  1  0.288  0.936  0.860  1.0
[/CIF]
.
The crystal structure described by MgFe6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(11), one O(3), one O(4), one O(5), one O(7), and one O(9) atom to form MgO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids,  a cornercorner with one Fe(6)O4F trigonal bipyramid,  a cornercorner with one Fe(2)O5 trigonal bipyramid,  an edgeedge with one Fe(5)O5F octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra,  an edgeedge with one Fe(6)O4F trigonal bipyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Fe(5)O5F octahedra,  an edgeedge with one Fe(4)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. In the second Fe site, Fe(2) is bonded to one O(1), one O(3), one O(4), one O(6), and one O(7) atom to form distorted FeO5 trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(3)O4F square pyramid, and  an edgeedge with one Fe(6)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-60°. In the third Fe site, Fe(3) is bonded to one O(4), one O(5), one O(6), one O(8), and one F(1) atom to form distorted FeO4F square pyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Fe(6)O4F trigonal bipyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 40-63°. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(5)O5F octahedra, and  an edgeedge with one Fe(1)O6 octahedra. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(2), one O(7), one O(8), one O(9), and one F(1) atom to form FeO5F octahedra that share corners with two equivalent Fe(3)O4F square pyramids, corners with two equivalent Fe(6)O4F trigonal bipyramids, corners with two equivalent Fe(2)O5 trigonal bipyramids,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra, and  an edgeedge with one Fe(4)O6 octahedra. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(3), one O(5), one O(7), and one F(1) atom to form distorted FeO4F trigonal bipyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Fe(5)O5F octahedra, corners with two equivalent Fe(1)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one Fe(3)O4F square pyramid, and  an edgeedge with one Fe(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 49-61°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(5) atom. In the second O site, O(2) is bonded in a water-like geometry to one Fe(4) and one Fe(5) atom. In the third O site, O(3) is bonded to one Mg(1), one Fe(2), one Fe(4), and one Fe(6) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the fourth O site, O(4) is bonded to one Mg(1), one Fe(1), one Fe(2), and one Fe(3) atom to form a mixture of corner and edge-sharing OMgFe3 trigonal pyramids. In the fifth O site, O(5) is bonded in a see-saw-like geometry to one Mg(1), one Fe(1), one Fe(3), and one Fe(6) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(4) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Fe(2), one Fe(5), and one Fe(6) atom to form a mixture of corner and edge-sharing OMgFe3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Fe(3), one Fe(4), and one Fe(5) atom. In the ninth O site, O(9) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Fe(1), one Fe(4), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(4) atom. F(1) is bonded in a distorted trigonal planar geometry to one Fe(3), one Fe(5), and one Fe(6) atom. is represented by the CIF file [CIF]
data_MgFe6O11F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.186
_cell_length_b   5.812
_cell_length_c   5.919
_cell_angle_alpha   81.729
_cell_angle_beta   68.376
_cell_angle_gamma   73.188
_symmetry_Int_Tables_number   1
_cell_volume   219.773
_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  0.845  0.660  0.160  1.0
  Fe  Fe1  1  0.826  0.678  0.666  1.0
  Fe  Fe2  1  0.662  0.261  0.422  1.0
  Fe  Fe3  1  0.323  0.714  0.589  1.0
  Fe  Fe4  1  0.170  0.322  0.352  1.0
  Fe  Fe5  1  0.502  0.006  0.017  1.0
  Fe  Fe6  1  0.982  0.091  0.937  1.0
  O  O7  1  0.674  0.031  0.685  1.0
  O  O8  1  0.351  0.322  0.032  1.0
  O  O9  1  0.945  0.288  0.200  1.0
  O  O10  1  0.629  0.599  0.521  1.0
  O  O11  1  0.028  0.764  0.803  1.0
  O  O12  1  0.371  0.405  0.471  1.0
  O  O13  1  0.716  0.039  0.161  1.0
  O  O14  1  0.308  0.977  0.343  1.0
  O  O15  1  0.639  0.676  0.994  1.0
  O  O16  1  0.975  0.319  0.673  1.0
  O  O17  1  0.025  0.662  0.350  1.0
  F  F18  1  0.288  0.936  0.860  1.0
[/CIF]
.