data_[Na8Ti4V4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ti  1.5400  1.4000  0.8517
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.1087]
_cell_length_b [12.3509]
_cell_length_c [11.5416]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na2TiVO5]
_chemical_formula_sum '[Na8 Ti4 V4 O20]'
_cell_volume [443.1414]
_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  0.0774  0.6690  1
  Na  Na1  4  0.0000  0.1622  0.2913  1
  Ti  Ti2  4  0.0000  0.2363  0.0333  1
  V  V3  4  0.0000  0.4663  0.4400  1
  O  O4  4  0.0000  0.0603  0.0305  1
  O  O5  4  0.0000  0.2659  0.6414  1
  O  O6  4  0.0000  0.3056  0.4214  1
  O  O7  4  0.0000  0.3789  0.0003  1
  O  O8  4  0.0000  0.4960  0.7968  1
]