data_[Na4Mg2Cr2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Cr  1.6600  1.4000  0.9400
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.3998]
_cell_length_b [5.5998]
_cell_length_c [9.8367]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.6782]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2MgCrF6]
_chemical_formula_sum '[Na4 Mg2 Cr2 F12]'
_cell_volume [250.3602]
_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  0.2730  0.5517  0.7551  1.0
  Mg  Mg1  2  0.0000  0.0000  0.5000  1.0
  Cr  Cr2  2  0.5000  0.0000  0.0000  1.0
  F  F3  4  0.1139  0.5504  0.2264  1.0
  F  F4  4  0.2679  0.2076  0.0667  1.0
  F  F5  4  0.3506  0.7035  0.0525  1.0
]