data_[Na4V4Cr4O20]
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
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.8797]
_cell_length_b [8.9049]
_cell_length_c [7.0974]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.7181]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaVCrO5]
_chemical_formula_sum '[Na4 V4 Cr4 O20]'
_cell_volume [398.0825]
_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  0.3218  0.2500  1.0
  V  V1  4  0.0000  0.3223  0.7500  1.0
  Cr  Cr2  4  0.0000  0.0000  0.0000  1.0
  O  O3  8  0.0920  0.2087  0.6028  1.0
  O  O4  8  0.1987  0.4409  0.9074  1.0
  O  O5  4  0.0000  0.0500  0.2500  1.0
]