The material described by MgFe6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Fe(4)O5F octahedra, corners with two equivalent Fe(6)O6 octahedra, edges with two equivalent Fe(1)O5F octahedra, edges with two equivalent Fe(3)O6 octahedra, and  a faceface with one Fe(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 47-49°. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2), one O(5), one O(6), one O(7), one O(9), and one F(1) atom to form distorted FeO5F octahedra that share corners with two equivalent Fe(6)O6 octahedra, corners with four equivalent Fe(4)O5F octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the second Fe site, Fe(2) is bonded to one O(11), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O5F octahedra, corners with four equivalent Fe(6)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-59°. In the third Fe site, Fe(3) is bonded to one O(1), one O(10), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O5F octahedra, corners with two equivalent Fe(6)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra,  an edgeedge with one Fe(2)O6 octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-56°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(2), one O(5), one O(7), and one F(1) atom to form distorted FeO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with four equivalent Fe(1)O5F octahedra,  an edgeedge with one Fe(6)O6 octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-59°. In the fifth Fe site, Fe(5) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(3), one O(6), one O(8), and one F(1) atom. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(11), one O(2), one O(3), one O(4), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Fe(1)O5F octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 40-56°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Fe(3), one Fe(4), and one Fe(5) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Fe(1), one Fe(4), and one Fe(6) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(5), and one Fe(6) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Fe(2), one Fe(3), and one Fe(6) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Fe(1), one Fe(3), and one Fe(5) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Fe(1), one Fe(3), and one Fe(4) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Fe(1), one Fe(2), and one Fe(6) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Mg(1), one Fe(3), one Fe(5), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(4), and one Fe(6) atom. F(1) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Fe(5) atom. is represented by the CIF file [CIF]
data_MgFe6O11F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.918
_cell_length_b   7.481
_cell_length_c   5.546
_cell_angle_alpha   95.873
_cell_angle_beta   91.679
_cell_angle_gamma   88.518
_symmetry_Int_Tables_number   1
_cell_volume   202.847
_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  0.009  0.495  0.002  1.0
  Fe  Fe1  1  0.520  0.697  0.134  1.0
  Fe  Fe2  1  0.492  0.001  0.508  1.0
  Fe  Fe3  1  0.508  0.325  0.855  1.0
  Fe  Fe4  1  0.981  0.700  0.633  1.0
  Fe  Fe5  1  0.994  0.298  0.395  1.0
  Fe  Fe6  1  0.002  0.006  0.006  1.0
  O  O7  1  0.847  0.445  0.666  1.0
  O  O8  1  0.843  0.768  0.966  1.0
  O  O9  1  0.813  0.084  0.299  1.0
  O  O10  1  0.710  0.100  0.817  1.0
  O  O11  1  0.665  0.764  0.451  1.0
  O  O12  1  0.667  0.441  0.149  1.0
  O  O13  1  0.337  0.574  0.857  1.0
  O  O14  1  0.333  0.244  0.557  1.0
  O  O15  1  0.291  0.909  0.191  1.0
  O  O16  1  0.164  0.243  0.056  1.0
  O  O17  1  0.178  0.917  0.707  1.0
  F  F18  1  0.161  0.570  0.336  1.0
[/CIF]
.
The material described by MgFe6O11F crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(10), one O(2), one O(6), one O(7), and one F(1) atom to form MgO5F octahedra that share  a cornercorner with one Fe(4)O5F octahedra, corners with two equivalent Fe(6)O6 octahedra, edges with two equivalent Fe(1)O5F octahedra, edges with two equivalent Fe(3)O6 octahedra, and  a faceface with one Fe(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 47-49°. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(2), one O(5), one O(6), one O(7), one O(9), and one F(1) atom to form distorted FeO5F octahedra that share corners with two equivalent Fe(6)O6 octahedra, corners with four equivalent Fe(4)O5F octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 45-57°. In the second Fe site, Fe(2) is bonded to one O(11), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O5F octahedra, corners with four equivalent Fe(6)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra, and  an edgeedge with one Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-59°. In the third Fe site, Fe(3) is bonded to one O(1), one O(10), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with two equivalent Fe(4)O5F octahedra, corners with two equivalent Fe(6)O6 octahedra,  an edgeedge with one Fe(1)O5F octahedra,  an edgeedge with one Fe(2)O6 octahedra, and edges with two equivalent Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-56°. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(2), one O(5), one O(7), and one F(1) atom to form distorted FeO5F octahedra that share  a cornercorner with one Mg(1)O5F octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with four equivalent Fe(1)O5F octahedra,  an edgeedge with one Fe(6)O6 octahedra, and  a faceface with one Mg(1)O5F octahedra. The corner-sharing octahedral tilt angles range from 43-59°. In the fifth Fe site, Fe(5) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(3), one O(6), one O(8), and one F(1) atom. In the sixth Fe site, Fe(6) is bonded to one O(10), one O(11), one O(2), one O(3), one O(4), and one O(9) atom to form FeO6 octahedra that share corners with two equivalent Mg(1)O5F octahedra, corners with two equivalent Fe(1)O5F octahedra, corners with two equivalent Fe(3)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, and  an edgeedge with one Fe(4)O5F octahedra. The corner-sharing octahedral tilt angles range from 40-56°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Fe(3), one Fe(4), and one Fe(5) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the second O site, O(2) is bonded to one Mg(1), one Fe(1), one Fe(4), and one Fe(6) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(5), and one Fe(6) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Fe(2), one Fe(3), and one Fe(6) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Fe(1), one Fe(2), and one Fe(4) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Fe(1), one Fe(3), and one Fe(5) atom. In the seventh O site, O(7) is bonded to one Mg(1), one Fe(1), one Fe(3), and one Fe(4) atom to form a mixture of distorted corner and edge-sharing OMgFe3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(3), and one Fe(5) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one Fe(1), one Fe(2), and one Fe(6) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Mg(1), one Fe(3), one Fe(5), and one Fe(6) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one Fe(2), one Fe(4), and one Fe(6) atom. F(1) is bonded in a 4-coordinate geometry to one Mg(1), one Fe(1), one Fe(4), and one Fe(5) atom. is represented by the CIF file [CIF]
data_MgFe6O11F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.918
_cell_length_b   7.481
_cell_length_c   5.546
_cell_angle_alpha   95.873
_cell_angle_beta   91.679
_cell_angle_gamma   88.518
_symmetry_Int_Tables_number   1
_cell_volume   202.847
_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  0.009  0.495  0.002  1.0
  Fe  Fe1  1  0.520  0.697  0.134  1.0
  Fe  Fe2  1  0.492  0.001  0.508  1.0
  Fe  Fe3  1  0.508  0.325  0.855  1.0
  Fe  Fe4  1  0.981  0.700  0.633  1.0
  Fe  Fe5  1  0.994  0.298  0.395  1.0
  Fe  Fe6  1  0.002  0.006  0.006  1.0
  O  O7  1  0.847  0.445  0.666  1.0
  O  O8  1  0.843  0.768  0.966  1.0
  O  O9  1  0.813  0.084  0.299  1.0
  O  O10  1  0.710  0.100  0.817  1.0
  O  O11  1  0.665  0.764  0.451  1.0
  O  O12  1  0.667  0.441  0.149  1.0
  O  O13  1  0.337  0.574  0.857  1.0
  O  O14  1  0.333  0.244  0.557  1.0
  O  O15  1  0.291  0.909  0.191  1.0
  O  O16  1  0.164  0.243  0.056  1.0
  O  O17  1  0.178  0.917  0.707  1.0
  F  F18  1  0.161  0.570  0.336  1.0
[/CIF]
.