data_[Pm2Sm2C8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.4535]
_cell_length_b [3.7955]
_cell_length_c [7.4072]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.5939]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmSmC4]
_chemical_formula_sum '[Pm2 Sm2 C8]'
_cell_volume [183.9905]
_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  0.0000  1
  Sm  Sm1  2  0.0000  0.5000  0.5000  1
  C  C2  4  0.1983  0.0000  0.7987  1
  C  C3  4  0.1993  0.5000  0.3024  1
]