data_[Na4Ta4V4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ta  1.5000  1.4500  0.8200
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.9581]
_cell_length_b [9.1945]
_cell_length_c [7.5380]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4420]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaTaVO5]
_chemical_formula_sum '[Na4 Ta4 V4 O20]'
_cell_volume [442.4487]
_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
[
  Na  Na0  4  0.0000  0.3209  0.2500  1.0
  Ta  Ta1  4  0.0000  0.0000  0.0000  1.0
  V  V2  4  0.0000  0.3267  0.7500  1.0
  O  O3  8  0.0790  0.2034  0.6011  1.0
  O  O4  8  0.1941  0.4510  0.9092  1.0
  O  O5  4  0.0000  0.0630  0.2500  1.0
]