data_[Pm3Ag9Cl18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.9554]
_cell_length_b [6.9554]
_cell_length_c [18.8817]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Pm(AgCl2)3]
_chemical_formula_sum '[Pm3 Ag9 Cl18]'
_cell_volume [791.0654]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.1562  1
  Ag  Ag1  3  0.0000  0.0000  0.3539  1
  Ag  Ag2  3  0.0000  0.0000  0.6471  1
  Ag  Ag3  3  0.0000  0.0000  0.8497  1
  Cl  Cl4  9  0.0097  0.3195  0.7487  1
  Cl  Cl5  9  0.0270  0.6676  0.9156  1
]