data_[Rb3Tl6Cu3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.2985]
_cell_length_b [4.2985]
_cell_length_c [24.8601]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [RbTl2Cu]
_chemical_formula_sum '[Rb3 Tl6 Cu3]'
_cell_volume [397.8061]
_cell_formula_units_Z [3]
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  3  -0.0000  -0.0000  0.5000  1
  Tl  Tl1  6  0.0000  0.0000  0.2807  1
  Cu  Cu2  3  0.0000  0.0000  0.0000  1
]