The structure described by FeSb2O4 crystallizes in the tetragonal P4_2/m space group. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), 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 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1), one Sb(1), and one Sb(2) atom to form distorted edge-sharing OFe2Sb2 trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Fe(1) and one Sb(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Sb(1), and two equivalent Sb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.768
_cell_length_b   8.278
_cell_length_c   8.278
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   395.293
_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  0.734  0.000  0.500  1.0
  Fe  Fe1  1  0.766  0.500  0.000  1.0
  Fe  Fe2  1  0.266  0.000  0.500  1.0
  Fe  Fe3  1  0.234  0.500  0.000  1.0
  Sb  Sb4  1  0.000  0.590  0.312  1.0
  Sb  Sb5  1  0.000  0.945  0.171  1.0
  Sb  Sb6  1  0.500  0.171  0.055  1.0
  Sb  Sb7  1  0.000  0.055  0.829  1.0
  Sb  Sb8  1  0.500  0.312  0.410  1.0
  Sb  Sb9  1  0.500  0.688  0.590  1.0
  Sb  Sb10  1  0.000  0.410  0.688  1.0
  Sb  Sb11  1  0.500  0.829  0.945  1.0
  O  O12  1  0.500  0.405  0.125  1.0
  O  O13  1  0.000  0.587  0.865  1.0
  O  O14  1  0.000  0.875  0.405  1.0
  O  O15  1  0.732  0.855  0.696  1.0
  O  O16  1  0.268  0.855  0.696  1.0
  O  O17  1  0.000  0.413  0.135  1.0
  O  O18  1  0.500  0.865  0.413  1.0
  O  O19  1  0.268  0.145  0.304  1.0
  O  O20  1  0.732  0.145  0.304  1.0
  O  O21  1  0.232  0.304  0.855  1.0
  O  O22  1  0.500  0.595  0.875  1.0
  O  O23  1  0.232  0.696  0.145  1.0
  O  O24  1  0.768  0.304  0.855  1.0
  O  O25  1  0.500  0.135  0.587  1.0
  O  O26  1  0.000  0.125  0.595  1.0
  O  O27  1  0.768  0.696  0.145  1.0
[/CIF]
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The structure described by FeSb2O4 crystallizes in the tetragonal P4_2/m space group. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), 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 4-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Fe(1), one Sb(1), and one Sb(2) atom to form distorted edge-sharing OFe2Sb2 trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Fe(1) and one Sb(1) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Sb(1), and two equivalent Sb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Fe(SbO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.768
_cell_length_b   8.278
_cell_length_c   8.278
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   395.293
_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  0.734  0.000  0.500  1.0
  Fe  Fe1  1  0.766  0.500  0.000  1.0
  Fe  Fe2  1  0.266  0.000  0.500  1.0
  Fe  Fe3  1  0.234  0.500  0.000  1.0
  Sb  Sb4  1  0.000  0.590  0.312  1.0
  Sb  Sb5  1  0.000  0.945  0.171  1.0
  Sb  Sb6  1  0.500  0.171  0.055  1.0
  Sb  Sb7  1  0.000  0.055  0.829  1.0
  Sb  Sb8  1  0.500  0.312  0.410  1.0
  Sb  Sb9  1  0.500  0.688  0.590  1.0
  Sb  Sb10  1  0.000  0.410  0.688  1.0
  Sb  Sb11  1  0.500  0.829  0.945  1.0
  O  O12  1  0.500  0.405  0.125  1.0
  O  O13  1  0.000  0.587  0.865  1.0
  O  O14  1  0.000  0.875  0.405  1.0
  O  O15  1  0.732  0.855  0.696  1.0
  O  O16  1  0.268  0.855  0.696  1.0
  O  O17  1  0.000  0.413  0.135  1.0
  O  O18  1  0.500  0.865  0.413  1.0
  O  O19  1  0.268  0.145  0.304  1.0
  O  O20  1  0.732  0.145  0.304  1.0
  O  O21  1  0.232  0.304  0.855  1.0
  O  O22  1  0.500  0.595  0.875  1.0
  O  O23  1  0.232  0.696  0.145  1.0
  O  O24  1  0.768  0.304  0.855  1.0
  O  O25  1  0.500  0.135  0.587  1.0
  O  O26  1  0.000  0.125  0.595  1.0
  O  O27  1  0.768  0.696  0.145  1.0
[/CIF]
.