data_[Ce2Pm2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Pm  1.1300  1.8500  1.1100
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [13.6113]
_cell_length_b [3.8899]
_cell_length_c [18.6569]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CePmCl4]
_chemical_formula_sum '[Ce2 Pm2 Cl8]'
_cell_volume [987.8066]
_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
[
  Ce  Ce0  2  0.3825  0.2500  0.5003  1
  Pm  Pm1  2  0.1138  0.7500  0.5014  1
  Cl  Cl2  2  0.0431  0.2500  0.5965  1
  Cl  Cl3  2  0.2073  0.2500  0.4143  1
  Cl  Cl4  2  0.2860  0.7500  0.5892  1
  Cl  Cl5  2  0.4564  0.7500  0.4020  1
]