data_[Li4Pm2Sn2O8]
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
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [4.5391]
_cell_length_b [4.5391]
_cell_length_c [10.5061]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Li2PmSnO4]
_chemical_formula_sum '[Li4 Pm2 Sn2 O8]'
_cell_volume [216.4649]
_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  2  0.0000  0.0000  0.0000  1
  Li  Li1  2  0.0000  0.5000  0.7500  1
  Pm  Pm2  2  0.0000  0.0000  0.5000  1
  Sn  Sn3  2  0.0000  0.5000  0.2500  1
  O  O4  4  0.0000  0.0000  0.2654  1
  O  O5  4  0.0000  0.5000  0.0303  1
]