data_[Sr6Pm8Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [5.2099]
_cell_length_b [8.3664]
_cell_length_c [17.6647]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Sr3(PmSn)4]
_chemical_formula_sum '[Sr6 Pm8 Sn8]'
_cell_volume [769.9814]
_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
[
  Sr  Sr0  4  0.0000  0.0000  0.1078  1
  Sr  Sr1  2  0.0000  0.5000  0.0000  1
  Pm  Pm2  8  0.0000  0.2110  0.3283  1
  Sn  Sn3  4  0.0000  0.3101  0.5000  1
  Sn  Sn4  4  0.0000  0.5000  0.2023  1
]