data_[Rb4Cr2S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cr  1.6600  1.4000  0.9400
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Pmma]
_cell_length_a [6.0966]
_cell_length_b [19.9885]
_cell_length_c [6.3454]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [51]
_chemical_formula_structural [Rb2CrS2]
_chemical_formula_sum '[Rb4 Cr2 S4]'
_cell_volume [773.2714]
_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  0.2500  0.3752  0.8207  1
  Cr  Cr1  2  0.0000  0.5000  0.5000  1
  S  S2  4  0.2500  0.4185  0.3437  1
]