data_[Sb4P8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sb  2.0500  1.4500  0.8300
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.3323]
_cell_length_b [8.5844]
_cell_length_c [9.1978]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.8325]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [SbP2O7]
_chemical_formula_sum '[Sb4 P8 O28]'
_cell_volume [529.5781]
_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  4  0.2528  0.0891  0.6245  1
  P  P1  4  0.0660  0.7367  0.2482  1
  P  P2  4  0.4497  0.7342  0.5275  1
  O  O3  4  0.0202  0.5934  0.1214  1
  O  O4  4  0.1145  0.2376  0.2036  1
  O  O5  4  0.1266  0.6176  0.6964  1
  O  O6  4  0.2481  0.6599  0.4011  1
  O  O7  4  0.4022  0.2471  0.0537  1
  O  O8  4  0.4158  0.6096  0.0906  1
  O  O9  4  0.4787  0.1029  0.8472  1
]