data_[Pm1Tm1I1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Tm  1.2500  1.7500  1.0950
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P3m1]
_cell_length_a [5.4180]
_cell_length_b [5.4180]
_cell_length_c [3.8121]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [PmTmI]
_chemical_formula_sum '[Pm1 Tm1 I1]'
_cell_volume [96.9102]
_cell_formula_units_Z [1]
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  1  0.6667  0.3333  0.6067  1
  Tm  Tm1  1  0.0000  0.0000  0.1253  1
  I  I2  1  0.3333  0.6667  0.2680  1
]