data_[Rb16Sn8Se24]
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/c]
_cell_length_a [7.5201]
_cell_length_b [15.1578]
_cell_length_c [16.8035]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.3710]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Rb2SnSe3]
_chemical_formula_sum '[Rb16 Sn8 Se24]'
_cell_volume [1913.7717]
_cell_formula_units_Z [8]
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  8  0.2253  0.2050  0.8476  1
  Rb  Rb1  8  0.2488  0.8987  0.9324  1
  Sn  Sn2  8  0.2306  0.5031  0.8406  1
  Se  Se3  8  0.1790  0.3364  0.3668  1
  Se  Se4  8  0.2264  0.1001  0.0442  1
  Se  Se5  4  0.0000  0.0398  0.7500  1
  Se  Se6  4  0.0000  0.4130  0.7500  1
]