data_[Rb4Y8Cu4S16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Y  1.2200  1.8000  1.0400
  Cu  1.9000  1.3500  0.8200
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.9870]
_cell_length_b [13.7986]
_cell_length_c [13.8100]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbY2CuS4]
_chemical_formula_sum '[Rb4 Y8 Cu4 S16]'
_cell_volume [759.7584]
_cell_formula_units_Z [4]
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  0.0000  0.1077  0.7500  1
  Y  Y1  8  0.0000  0.3658  0.5620  1
  Cu  Cu2  4  0.0000  0.1647  0.2500  1
  S  S3  8  0.0000  0.2595  0.1088  1
  S  S4  4  0.0000  0.0000  0.0000  1
  S  S5  4  0.0000  0.4251  0.7500  1
]