data_[Pm8Si2Cl10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Si  1.9000  1.1000  0.5400
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.1082]
_cell_length_b [4.0702]
_cell_length_c [8.3502]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.4038]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm4SiCl5]
_chemical_formula_sum '[Pm8 Si2 Cl10]'
_cell_volume [596.0963]
_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  4  0.0001  0.0000  0.2326  1
  Pm  Pm1  4  0.1555  0.5000  0.0920  1
  Si  Si2  2  0.0000  0.5000  0.0000  1
  Cl  Cl3  4  0.1659  0.0000  0.3299  1
  Cl  Cl4  4  0.1709  0.0000  0.8566  1
  Cl  Cl5  2  0.0000  0.5000  0.5000  1
]