data_[Rb2Sn6Se4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sn  1.9600  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.7512]
_cell_length_b [6.2230]
_cell_length_c [8.5733]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.3097]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [RbSn3(SeO3)2]
_chemical_formula_sum '[Rb2 Sn6 Se4 O12]'
_cell_volume [522.7367]
_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
[
  Rb  Rb0  2  0.0000  0.0000  0.5000  1
  Sn  Sn1  4  0.1602  0.5000  0.5061  1
  Sn  Sn2  2  0.0000  0.0000  0.0000  1
  Se  Se3  4  0.1380  0.5000  0.9073  1
  O  O4  8  0.0332  0.2837  0.8152  1
  O  O5  4  0.2487  0.5000  0.8002  1
]