data_[Rb2Si2As2S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Si  1.9000  1.1000  0.5400
  As  2.1800  1.1500  0.6600
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.9742]
_cell_length_b [6.5992]
_cell_length_c [8.7284]
_cell_angle_alpha [90.0000]
_cell_angle_beta [110.0350]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbSiAsS4]
_chemical_formula_sum '[Rb2 Si2 As2 S8]'
_cell_volume [431.5203]
_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  0.2672  0.7500  0.0112  1.0
  Si  Si1  2  0.2911  0.2500  0.3251  1.0
  As  As2  2  0.2713  0.7500  0.4768  1.0
  S  S3  4  0.1054  0.5008  0.2992  1.0
  S  S4  2  0.4122  0.2500  0.1526  1.0
  S  S5  2  0.4669  0.2500  0.5787  1.0
]