data_[Li8Pm4Zn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Pm  1.1300  1.8500  1.1100
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [3.5627]
_cell_length_b [4.5417]
_cell_length_c [25.5924]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Li2PmZn2]
_chemical_formula_sum '[Li8 Pm4 Zn8]'
_cell_volume [414.1013]
_cell_formula_units_Z [4]
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
[
  Li  Li0  4  0.0000  0.2500  0.2949  1
  Li  Li1  4  0.0000  0.2500  0.8027  1
  Pm  Pm2  4  0.0000  0.2500  0.5771  1
  Zn  Zn3  4  0.0000  0.2500  0.0248  1
  Zn  Zn4  4  0.0000  0.2500  0.1285  1
]