data_[Na4V4Sn4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  V  1.6300  1.3500  0.7775
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.1396]
_cell_length_b [9.2305]
_cell_length_c [7.3838]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.5414]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaVSnO5]
_chemical_formula_sum '[Na4 V4 Sn4 O20]'
_cell_volume [446.1093]
_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  0.3267  0.7500  1.0
  V  V1  4  0.0000  0.3251  0.2500  1.0
  Sn  Sn2  4  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0964  0.2124  0.1175  1.0
  O  O4  8  0.1875  0.4395  0.4096  1.0
  O  O5  4  0.0000  0.0806  0.7500  1.0
]