data_[Si8Sn4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.8323]
_cell_length_b [9.0396]
_cell_length_c [5.4155]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4733]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Si2SnO6]
_chemical_formula_sum '[Si8 Sn4 O24]'
_cell_volume [453.7935]
_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
[
  Si  Si0  8  0.1989  0.4172  0.7429  1.0
  Sn  Sn1  4  0.0000  0.1106  0.7500  1.0
  O  O2  8  0.1194  0.0681  0.1450  1.0
  O  O3  8  0.1439  0.4925  0.9671  1.0
  O  O4  8  0.1478  0.2469  0.6978  1.0
]