data_[Rb6Sn4Se8]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.5139]
_cell_length_b [5.4990]
_cell_length_c [10.0417]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.5360]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3(SnSe2)2]
_chemical_formula_sum '[Rb6 Sn4 Se8]'
_cell_volume [697.2948]
_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  4  0.1482  0.5000  0.7460  1
  Rb  Rb1  2  0.0000  0.0000  0.0000  1
  Sn  Sn2  4  0.1678  0.5000  0.3604  1
  Se  Se3  4  0.1258  0.0000  0.4052  1
  Se  Se4  4  0.1861  0.5000  0.1179  1
]