The material structure described by Sb2O5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form SbO6 octahedra that share corners with three equivalent Sb(2)O5 trigonal bipyramids,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O5 trigonal bipyramid. In the second Sb site, Sb(2) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted SbO5 trigonal bipyramids that share corners with three equivalent Sb(1)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 41-63°. There are five inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sb(1) and one Sb(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Sb(1) and two equivalent Sb(2) atoms. In the fifth O site, O(5) is bonded in a water-like geometry to one Sb(1) and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.109
_cell_length_b   8.577
_cell_length_c   10.282
_cell_angle_alpha   64.184
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   405.617
_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
  Sb  Sb0  1  0.473  0.191  0.943  1.0
  Sb  Sb1  1  0.999  0.649  0.329  1.0
  Sb  Sb2  1  0.973  0.809  0.557  1.0
  Sb  Sb3  1  0.501  0.649  0.829  1.0
  Sb  Sb4  1  0.499  0.351  0.171  1.0
  Sb  Sb5  1  0.027  0.191  0.443  1.0
  Sb  Sb6  1  0.001  0.351  0.671  1.0
  Sb  Sb7  1  0.527  0.809  0.057  1.0
  O  O8  1  0.730  0.008  0.055  1.0
  O  O9  1  0.197  0.362  0.830  1.0
  O  O10  1  0.336  0.735  0.248  1.0
  O  O11  1  0.149  0.590  0.542  1.0
  O  O12  1  0.649  0.410  0.958  1.0
  O  O13  1  0.817  0.817  0.373  1.0
  O  O14  1  0.697  0.638  0.670  1.0
  O  O15  1  0.230  0.992  0.445  1.0
  O  O16  1  0.317  0.183  0.127  1.0
  O  O17  1  0.164  0.735  0.748  1.0
  O  O18  1  0.836  0.265  0.252  1.0
  O  O19  1  0.683  0.817  0.873  1.0
  O  O20  1  0.770  0.008  0.555  1.0
  O  O21  1  0.303  0.362  0.330  1.0
  O  O22  1  0.183  0.183  0.627  1.0
  O  O23  1  0.351  0.590  0.042  1.0
  O  O24  1  0.851  0.410  0.458  1.0
  O  O25  1  0.664  0.265  0.752  1.0
  O  O26  1  0.803  0.638  0.170  1.0
  O  O27  1  0.270  0.992  0.945  1.0
[/CIF]
.
The material structure described by Sb2O5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form SbO6 octahedra that share corners with three equivalent Sb(2)O5 trigonal bipyramids,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O5 trigonal bipyramid. In the second Sb site, Sb(2) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted SbO5 trigonal bipyramids that share corners with three equivalent Sb(1)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, and  an edgeedge with one Sb(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 41-63°. There are five inequivalent O sites. In the first O site, O(1) is bonded in an L-shaped geometry to two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sb(1) and one Sb(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Sb(1) and one Sb(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Sb(1) and two equivalent Sb(2) atoms. In the fifth O site, O(5) is bonded in a water-like geometry to one Sb(1) and one Sb(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.109
_cell_length_b   8.577
_cell_length_c   10.282
_cell_angle_alpha   64.184
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   405.617
_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
  Sb  Sb0  1  0.473  0.191  0.943  1.0
  Sb  Sb1  1  0.999  0.649  0.329  1.0
  Sb  Sb2  1  0.973  0.809  0.557  1.0
  Sb  Sb3  1  0.501  0.649  0.829  1.0
  Sb  Sb4  1  0.499  0.351  0.171  1.0
  Sb  Sb5  1  0.027  0.191  0.443  1.0
  Sb  Sb6  1  0.001  0.351  0.671  1.0
  Sb  Sb7  1  0.527  0.809  0.057  1.0
  O  O8  1  0.730  0.008  0.055  1.0
  O  O9  1  0.197  0.362  0.830  1.0
  O  O10  1  0.336  0.735  0.248  1.0
  O  O11  1  0.149  0.590  0.542  1.0
  O  O12  1  0.649  0.410  0.958  1.0
  O  O13  1  0.817  0.817  0.373  1.0
  O  O14  1  0.697  0.638  0.670  1.0
  O  O15  1  0.230  0.992  0.445  1.0
  O  O16  1  0.317  0.183  0.127  1.0
  O  O17  1  0.164  0.735  0.748  1.0
  O  O18  1  0.836  0.265  0.252  1.0
  O  O19  1  0.683  0.817  0.873  1.0
  O  O20  1  0.770  0.008  0.555  1.0
  O  O21  1  0.303  0.362  0.330  1.0
  O  O22  1  0.183  0.183  0.627  1.0
  O  O23  1  0.351  0.590  0.042  1.0
  O  O24  1  0.851  0.410  0.458  1.0
  O  O25  1  0.664  0.265  0.752  1.0
  O  O26  1  0.803  0.638  0.170  1.0
  O  O27  1  0.270  0.992  0.945  1.0
[/CIF]
.