data_[Rb3Pm3Se3I3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Pm  1.1300  1.8500  1.1100
  Se  2.5500  1.1500  1.0133
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.3452]
_cell_length_b [4.3452]
_cell_length_c [26.1464]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [RbPmSeI]
_chemical_formula_sum '[Rb3 Pm3 Se3 I3]'
_cell_volume [427.5164]
_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
[
  Rb  Rb0  3  0.0000  0.0000  0.3496  1
  Pm  Pm1  3  0.0000  0.0000  0.1589  1
  Se  Se2  3  0.0000  0.0000  0.7663  1
  I  I3  3  0.0000  0.0000  0.5732  1
]