data_[Rb4Cu4Te2S2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cu  1.9000  1.3500  0.8200
  Te  2.1000  1.4000  1.2933
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [5.1377]
_cell_length_b [5.2950]
_cell_length_c [15.3204]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Rb2Cu2TeS]
_chemical_formula_sum '[Rb4 Cu4 Te2 S2]'
_cell_volume [416.7767]
_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  0.0000  0.0000  0.3460  1
  Rb  Rb1  2  0.5000  0.0000  0.6371  1
  Cu  Cu2  4  0.2469  0.0000  0.0097  1
  Te  Te3  2  0.5000  0.0000  0.8732  1
  S  S4  2  0.0000  0.0000  0.1242  1
]