data_[Sr20Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [18.2295]
_cell_length_b [7.6733]
_cell_length_c [8.5409]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.8609]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sr5Sn2]
_chemical_formula_sum '[Sr20 Sn8]'
_cell_volume [1188.4674]
_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
[
  Sr  Sr0  8  0.0893  0.1355  0.9310  1
  Sr  Sr1  8  0.2239  0.4454  0.3104  1
  Sr  Sr2  4  0.0000  0.4368  0.2500  1
  Sn  Sn3  8  0.1070  0.2768  0.5613  1
]