data_[Pm2Tl2Zn4]
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
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.5435]
_cell_length_b [5.5941]
_cell_length_c [7.5299]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [PmTlZn2]
_chemical_formula_sum '[Pm2 Tl2 Zn4]'
_cell_volume [191.3884]
_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  2  0.5000  0.0000  0.8125  1
  Tl  Tl1  2  0.0000  0.0000  0.4785  1
  Zn  Zn2  2  0.0000  0.0000  0.0927  1
  Zn  Zn3  2  0.5000  0.0000  0.2192  1
]