data_[Na12Cr2P8]
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
]
_symmetry_space_group_name_H-M [P6_3mc]
_cell_length_a [9.0188]
_cell_length_b [9.0188]
_cell_length_c [7.0900]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [186]
_chemical_formula_structural [Na6CrP4]
_chemical_formula_sum '[Na12 Cr2 P8]'
_cell_volume [499.4366]
_cell_formula_units_Z [2]
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  6  0.0613  0.5306  0.1363  1
  Na  Na1  6  0.1464  0.2927  0.4542  1
  Cr  Cr2  2  0.3333  0.6667  0.7474  1
  P  P3  6  0.1984  0.3967  0.8458  1
  P  P4  2  0.3333  0.6667  0.4359  1
]