The structure described by FeSb2O4 crystallizes in the monoclinic P2_1/c space group. Fe(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form edge-sharing FeO6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(4) atom. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Fe(1), one Sb(1), and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.803
_cell_length_b   5.878
_cell_length_c   8.761
_cell_angle_alpha   88.307
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   453.112
_cell_formula_units_Z   4
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  0.999  0.227  0.503  1.0
  Fe  Fe1  1  0.499  0.773  0.997  1.0
  Fe  Fe2  1  0.501  0.227  0.003  1.0
  Fe  Fe3  1  0.001  0.773  0.497  1.0
  Sb  Sb4  1  0.328  0.983  0.335  1.0
  Sb  Sb5  1  0.828  0.017  0.165  1.0
  Sb  Sb6  1  0.832  0.512  0.819  1.0
  Sb  Sb7  1  0.332  0.488  0.681  1.0
  Sb  Sb8  1  0.172  0.983  0.835  1.0
  Sb  Sb9  1  0.668  0.512  0.319  1.0
  Sb  Sb10  1  0.672  0.017  0.665  1.0
  Sb  Sb11  1  0.168  0.488  0.181  1.0
  O  O12  1  0.360  0.503  0.903  1.0
  O  O13  1  0.684  0.244  0.833  1.0
  O  O14  1  0.105  0.013  0.348  1.0
  O  O15  1  0.161  0.254  0.689  1.0
  O  O16  1  0.140  0.503  0.403  1.0
  O  O17  1  0.895  0.987  0.652  1.0
  O  O18  1  0.816  0.244  0.333  1.0
  O  O19  1  0.661  0.746  0.811  1.0
  O  O20  1  0.339  0.254  0.189  1.0
  O  O21  1  0.605  0.987  0.152  1.0
  O  O22  1  0.839  0.746  0.311  1.0
  O  O23  1  0.395  0.013  0.848  1.0
  O  O24  1  0.640  0.497  0.097  1.0
  O  O25  1  0.316  0.756  0.167  1.0
  O  O26  1  0.860  0.497  0.597  1.0
  O  O27  1  0.184  0.756  0.667  1.0
[/CIF]
.
The structure described by FeSb2O4 crystallizes in the monoclinic P2_1/c space group. Fe(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form edge-sharing FeO6 octahedra. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(4) atom. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(1), one O(2), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Fe(1), one Sb(1), and one Sb(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one Sb(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Fe(1), one Sb(1), and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.803
_cell_length_b   5.878
_cell_length_c   8.761
_cell_angle_alpha   88.307
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   453.112
_cell_formula_units_Z   4
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  0.999  0.227  0.503  1.0
  Fe  Fe1  1  0.499  0.773  0.997  1.0
  Fe  Fe2  1  0.501  0.227  0.003  1.0
  Fe  Fe3  1  0.001  0.773  0.497  1.0
  Sb  Sb4  1  0.328  0.983  0.335  1.0
  Sb  Sb5  1  0.828  0.017  0.165  1.0
  Sb  Sb6  1  0.832  0.512  0.819  1.0
  Sb  Sb7  1  0.332  0.488  0.681  1.0
  Sb  Sb8  1  0.172  0.983  0.835  1.0
  Sb  Sb9  1  0.668  0.512  0.319  1.0
  Sb  Sb10  1  0.672  0.017  0.665  1.0
  Sb  Sb11  1  0.168  0.488  0.181  1.0
  O  O12  1  0.360  0.503  0.903  1.0
  O  O13  1  0.684  0.244  0.833  1.0
  O  O14  1  0.105  0.013  0.348  1.0
  O  O15  1  0.161  0.254  0.689  1.0
  O  O16  1  0.140  0.503  0.403  1.0
  O  O17  1  0.895  0.987  0.652  1.0
  O  O18  1  0.816  0.244  0.333  1.0
  O  O19  1  0.661  0.746  0.811  1.0
  O  O20  1  0.339  0.254  0.189  1.0
  O  O21  1  0.605  0.987  0.152  1.0
  O  O22  1  0.839  0.746  0.311  1.0
  O  O23  1  0.395  0.013  0.848  1.0
  O  O24  1  0.640  0.497  0.097  1.0
  O  O25  1  0.316  0.756  0.167  1.0
  O  O26  1  0.860  0.497  0.597  1.0
  O  O27  1  0.184  0.756  0.667  1.0
[/CIF]
.