The structure described by Fe10O11 crystallizes in the triclinic P-1 space group. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. In the second Fe site, Fe(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and two equivalent O(6) atoms. In the third Fe site, Fe(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and two equivalent O(5) atoms. In the fourth Fe site, Fe(4) is bonded in a 2-coordinate geometry to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms. In the fifth Fe site, Fe(5) is bonded in a 2-coordinate geometry to one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), and two equivalent Fe(5) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Fe(2), one Fe(3), one Fe(4), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), and two equivalent Fe(4) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), one Fe(4), and two equivalent Fe(5) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Fe(1), one Fe(5), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Fe(3), one Fe(4), one Fe(5), and two equivalent Fe(2) atoms. is represented by the CIF card [CIF]
data_Fe10O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.880
_cell_length_b   6.807
_cell_length_c   5.354
_cell_angle_alpha   104.795
_cell_angle_beta   98.417
_cell_angle_gamma   107.407
_symmetry_Int_Tables_number   1
_cell_volume   224.474
_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
  Fe  Fe0  1  0.655  0.914  0.182  1.0
  Fe  Fe1  1  0.816  0.443  0.085  1.0
  Fe  Fe2  1  0.267  0.830  0.361  1.0
  Fe  Fe3  1  0.444  0.351  0.265  1.0
  Fe  Fe4  1  0.904  0.726  0.560  1.0
  Fe  Fe5  1  0.096  0.274  0.440  1.0
  Fe  Fe6  1  0.556  0.649  0.735  1.0
  Fe  Fe7  1  0.733  0.170  0.639  1.0
  Fe  Fe8  1  0.184  0.557  0.915  1.0
  Fe  Fe9  1  0.345  0.086  0.818  1.0
  O  O10  1  0.945  0.832  0.286  1.0
  O  O11  1  0.336  0.938  0.094  1.0
  O  O12  1  0.500  0.500  0.000  1.0
  O  O13  1  0.775  0.326  0.347  1.0
  O  O14  1  0.576  0.759  0.449  1.0
  O  O15  1  0.125  0.425  0.172  1.0
  O  O16  1  0.225  0.674  0.653  1.0
  O  O17  1  0.875  0.575  0.828  1.0
  O  O18  1  0.424  0.241  0.551  1.0
  O  O19  1  0.055  0.168  0.714  1.0
  O  O20  1  0.664  0.062  0.906  1.0
[/CIF]
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The structure described by Fe10O11 crystallizes in the triclinic P-1 space group. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. In the second Fe site, Fe(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and two equivalent O(6) atoms. In the third Fe site, Fe(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and two equivalent O(5) atoms. In the fourth Fe site, Fe(4) is bonded in a 2-coordinate geometry to one O(2), one O(3), one O(4), one O(6), and two equivalent O(5) atoms. In the fifth Fe site, Fe(5) is bonded in a 2-coordinate geometry to one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), and two equivalent Fe(5) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Fe(2), one Fe(3), one Fe(4), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), and two equivalent Fe(4) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Fe(1), one Fe(2), one Fe(3), one Fe(4), and two equivalent Fe(5) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Fe(1), one Fe(5), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Fe(3), one Fe(4), one Fe(5), and two equivalent Fe(2) atoms. is represented by the CIF card [CIF]
data_Fe10O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.880
_cell_length_b   6.807
_cell_length_c   5.354
_cell_angle_alpha   104.795
_cell_angle_beta   98.417
_cell_angle_gamma   107.407
_symmetry_Int_Tables_number   1
_cell_volume   224.474
_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
  Fe  Fe0  1  0.655  0.914  0.182  1.0
  Fe  Fe1  1  0.816  0.443  0.085  1.0
  Fe  Fe2  1  0.267  0.830  0.361  1.0
  Fe  Fe3  1  0.444  0.351  0.265  1.0
  Fe  Fe4  1  0.904  0.726  0.560  1.0
  Fe  Fe5  1  0.096  0.274  0.440  1.0
  Fe  Fe6  1  0.556  0.649  0.735  1.0
  Fe  Fe7  1  0.733  0.170  0.639  1.0
  Fe  Fe8  1  0.184  0.557  0.915  1.0
  Fe  Fe9  1  0.345  0.086  0.818  1.0
  O  O10  1  0.945  0.832  0.286  1.0
  O  O11  1  0.336  0.938  0.094  1.0
  O  O12  1  0.500  0.500  0.000  1.0
  O  O13  1  0.775  0.326  0.347  1.0
  O  O14  1  0.576  0.759  0.449  1.0
  O  O15  1  0.125  0.425  0.172  1.0
  O  O16  1  0.225  0.674  0.653  1.0
  O  O17  1  0.875  0.575  0.828  1.0
  O  O18  1  0.424  0.241  0.551  1.0
  O  O19  1  0.055  0.168  0.714  1.0
  O  O20  1  0.664  0.062  0.906  1.0
[/CIF]
.