data_[Nb4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.0931]
_cell_length_b [3.8727]
_cell_length_c [4.0609]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.7565]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Nb2O5]
_chemical_formula_sum '[Nb4 O10]'
_cell_volume [205.8961]
_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
[
  Nb  Nb0  4  0.1462  0.0000  0.0672  1.0
  O  O1  4  0.1476  0.0000  0.5106  1.0
  O  O2  4  0.1850  0.5000  0.0031  1.0
  O  O3  2  0.0000  0.0000  0.0000  1.0
]