data_[Pm2Pr2C2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P-6m2]
_cell_length_a [3.6766]
_cell_length_b [3.6766]
_cell_length_c [12.9827]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [187]
_chemical_formula_structural [PmPrC]
_chemical_formula_sum '[Pm2 Pr2 C2]'
_cell_volume [151.9846]
_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
[
  Pm  Pm0  2  0.0000  0.0000  0.3871  1
  Pr  Pr1  2  0.6667  0.3333  0.8841  1
  C  C2  1  0.0000  0.0000  0.0000  1
  C  C3  1  0.6667  0.3333  0.5000  1
]