data_[Li8Pm2Si8]
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
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P4_2/nmc]
_cell_length_a [6.0012]
_cell_length_b [6.0012]
_cell_length_c [8.5473]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [137]
_chemical_formula_structural [Li4PmSi4]
_chemical_formula_sum '[Li8 Pm2 Si8]'
_cell_volume [307.8225]
_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
[
  Li  Li0  8  0.0000  0.2528  0.4026  1
  Pm  Pm1  2  0.0000  0.0000  0.0000  1
  Si  Si2  8  0.0000  0.3074  0.7013  1
]