The structure described by Sb3O7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing SbO6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 30°. In the second Sb site, Sb(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of corner and edge-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 22°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Sb(2) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Sb(2) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Sb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.613
_cell_length_b   7.613
_cell_length_c   7.613
_cell_angle_alpha   128.554
_cell_angle_beta   119.806
_cell_angle_gamma   83.090
_symmetry_Int_Tables_number   1
_cell_volume   287.469
_cell_formula_units_Z   2
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
  Sb  Sb0  1  0.785  0.285  0.000  1.0
  Sb  Sb1  1  0.715  0.715  0.500  1.0
  Sb  Sb2  1  0.500  0.000  0.000  1.0
  Sb  Sb3  1  0.000  0.000  0.500  1.0
  Sb  Sb4  1  0.285  0.285  0.500  1.0
  Sb  Sb5  1  0.215  0.715  0.000  1.0
  O  O6  1  0.336  0.664  0.783  1.0
  O  O7  1  0.164  0.947  0.328  1.0
  O  O8  1  0.381  0.053  0.217  1.0
  O  O9  1  0.119  0.336  0.672  1.0
  O  O10  1  0.664  0.336  0.217  1.0
  O  O11  1  0.836  0.053  0.672  1.0
  O  O12  1  0.619  0.947  0.783  1.0
  O  O13  1  0.881  0.664  0.328  1.0
  O  O14  1  0.750  0.944  0.194  1.0
  O  O15  1  0.250  0.056  0.806  1.0
  O  O16  1  0.926  0.709  0.783  1.0
  O  O17  1  0.574  0.357  0.783  1.0
  O  O18  1  0.426  0.643  0.217  1.0
  O  O19  1  0.074  0.291  0.217  1.0
[/CIF]
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The structure described by Sb3O7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form a mixture of distorted corner and edge-sharing SbO6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 30°. In the second Sb site, Sb(2) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form a mixture of corner and edge-sharing SbO6 octahedra. The corner-sharing octahedral tilt angles are 22°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Sb(2) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent Sb(2) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent Sb(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.613
_cell_length_b   7.613
_cell_length_c   7.613
_cell_angle_alpha   128.554
_cell_angle_beta   119.806
_cell_angle_gamma   83.090
_symmetry_Int_Tables_number   1
_cell_volume   287.469
_cell_formula_units_Z   2
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
  Sb  Sb0  1  0.785  0.285  0.000  1.0
  Sb  Sb1  1  0.715  0.715  0.500  1.0
  Sb  Sb2  1  0.500  0.000  0.000  1.0
  Sb  Sb3  1  0.000  0.000  0.500  1.0
  Sb  Sb4  1  0.285  0.285  0.500  1.0
  Sb  Sb5  1  0.215  0.715  0.000  1.0
  O  O6  1  0.336  0.664  0.783  1.0
  O  O7  1  0.164  0.947  0.328  1.0
  O  O8  1  0.381  0.053  0.217  1.0
  O  O9  1  0.119  0.336  0.672  1.0
  O  O10  1  0.664  0.336  0.217  1.0
  O  O11  1  0.836  0.053  0.672  1.0
  O  O12  1  0.619  0.947  0.783  1.0
  O  O13  1  0.881  0.664  0.328  1.0
  O  O14  1  0.750  0.944  0.194  1.0
  O  O15  1  0.250  0.056  0.806  1.0
  O  O16  1  0.926  0.709  0.783  1.0
  O  O17  1  0.574  0.357  0.783  1.0
  O  O18  1  0.426  0.643  0.217  1.0
  O  O19  1  0.074  0.291  0.217  1.0
[/CIF]
.