data_[Pm8Ta4C8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ta  1.5000  1.4500  0.8200
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.8806]
_cell_length_b [6.6924]
_cell_length_c [6.0696]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.8402]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Pm2TaC2]
_chemical_formula_sum '[Pm8 Ta4 C8]'
_cell_volume [354.2955]
_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
[
  Pm  Pm0  4  0.0381  0.7424  0.5161  1
  Pm  Pm1  4  0.3225  0.1219  0.3942  1
  Ta  Ta2  4  0.3753  0.6211  0.3609  1
  C  C3  4  0.1582  0.0385  0.7730  1
  C  C4  4  0.4847  0.6233  0.7174  1
]