data_[Li8Pm4Ag4]
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
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.2342]
_cell_length_b [10.6767]
_cell_length_c [7.9747]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Li2PmAg]
_chemical_formula_sum '[Li8 Pm4 Ag4]'
_cell_volume [360.5165]
_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  8  0.0000  0.3476  0.0545  1
  Pm  Pm1  4  0.0000  0.0606  0.2500  1
  Ag  Ag2  4  0.0000  0.2249  0.7500  1
]