data_[Rb2Tb2Si2S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tb  1.1000  1.7500  0.9815
  Si  1.9000  1.1000  0.5400
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.4279]
_cell_length_b [6.6678]
_cell_length_c [9.0831]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.7967]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbTbSiS4]
_chemical_formula_sum '[Rb2 Tb2 Si2 S8]'
_cell_volume [370.6704]
_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  0.2692  0.2500  0.0639  1.0
  Tb  Tb1  2  0.2264  0.2500  0.5479  1.0
  Si  Si2  2  0.2222  0.7500  0.3338  1.0
  S  S3  4  0.0005  0.5012  0.2975  1.0
  S  S4  2  0.4167  0.7500  0.1839  1.0
  S  S5  2  0.4216  0.7500  0.5679  1.0
]