data_[Pm8Tl4Ni2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Tl  1.6200  1.9000  1.3325
  Ni  1.9100  1.3500  0.7400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.6884]
_cell_length_b [3.8445]
_cell_length_c [6.6567]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.6099]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm4Tl2Ni]
_chemical_formula_sum '[Pm8 Tl4 Ni2]'
_cell_volume [420.8588]
_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  0.0855  0.0000  0.4222  1
  Pm  Pm1  4  0.1121  0.5000  0.9503  1
  Tl  Tl2  4  0.2430  0.5000  0.6996  1
  Ni  Ni3  2  0.0000  0.0000  0.0000  1
]