data_[Cs2Er2Si2S8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Er  1.2400  1.7500  1.0300
  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 [6.3634]
_cell_length_b [6.7301]
_cell_length_c [9.4433]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.3980]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [CsErSiS4]
_chemical_formula_sum '[Cs2 Er2 Si2 S8]'
_cell_volume [383.7435]
_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
[
  Cs  Cs0  2  0.2664  0.2500  0.0620  1.0
  Er  Er1  2  0.2237  0.2500  0.5445  1.0
  Si  Si2  2  0.2235  0.7500  0.3437  1.0
  S  S3  4  0.0017  0.0033  0.6906  1.0
  S  S4  2  0.4177  0.7500  0.1989  1.0
  S  S5  2  0.4320  0.7500  0.5675  1.0
]