data_[Na4Pr2Cr4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Pr  1.1300  1.8500  1.0600
  Cr  1.6600  1.4000  0.9400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.5389]
_cell_length_b [3.3952]
_cell_length_c [8.6924]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.0218]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Pr(CrN2)2]
_chemical_formula_sum '[Na4 Pr2 Cr4 N8]'
_cell_volume [271.8942]
_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  4  0.1345  0.0000  0.7314  1.0
  Pr  Pr1  2  0.0000  0.0000  0.0000  1.0
  Cr  Cr2  4  0.1636  0.5000  0.3770  1.0
  N  N3  4  0.0224  0.5000  0.8055  1.0
  N  N4  4  0.2328  0.0000  0.3478  1.0
]