data_[Rb9Cu9Sb6]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.3463]
_cell_length_b [6.3463]
_cell_length_c [22.0352]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Rb3Cu3Sb2]
_chemical_formula_sum '[Rb9 Cu9 Sb6]'
_cell_volume [768.5860]
_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  6  0.0000  0.0000  0.0851  1.0
  Rb  Rb1  3  -0.0000  -0.0000  0.5000  1.0
  Cu  Cu2  9  0.0000  0.5000  0.0000  1.0
  Sb  Sb3  6  0.0000  0.0000  0.2536  1.0
]