data_[Na4Cr4P4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cr  1.6600  1.4000  0.9400
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.6061]
_cell_length_b [8.5281]
_cell_length_c [6.9786]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.7798]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaCrPO5]
_chemical_formula_sum '[Na4 Cr4 P4 O20]'
_cell_volume [356.9562]
_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  0.3305  0.2500  1.0
  Cr  Cr1  4  0.0000  0.0000  0.0000  1.0
  P  P2  4  0.0000  0.3189  0.7500  1.0
  O  O3  8  0.0977  0.2161  0.6237  1.0
  O  O4  8  0.1829  0.4291  0.9034  1.0
  O  O5  4  0.0000  0.0590  0.2500  1.0
]