data_[Rb8Ti4Sn4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ti  1.5400  1.4000  0.8517
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.2844]
_cell_length_b [16.9502]
_cell_length_c [12.2669]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Rb2TiSnO5]
_chemical_formula_sum '[Rb8 Ti4 Sn4 O20]'
_cell_volume [682.9150]
_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
[
  Rb  Rb0  4  0.0000  0.1007  0.6570  1
  Rb  Rb1  4  0.0000  0.1287  0.3152  1
  Ti  Ti2  4  0.0000  0.4408  0.4413  1
  Sn  Sn3  4  0.0000  0.2205  0.0313  1
  O  O4  4  0.0000  0.0377  0.0119  1
  O  O5  4  0.0000  0.2959  0.6361  1
  O  O6  4  0.0000  0.3287  0.4237  1
  O  O7  4  0.0000  0.3307  0.9933  1
  O  O8  4  0.0000  0.4831  0.3142  1
]