data_[Rb2Cu2Sb6]
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 [Pm]
_cell_length_a [6.1849]
_cell_length_b [6.4362]
_cell_length_c [8.7739]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.6653]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [6]
_chemical_formula_structural [RbCuSb3]
_chemical_formula_sum '[Rb2 Cu2 Sb6]'
_cell_volume [349.2387]
_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  1  0.4945  0.0000  0.6797  1
  Rb  Rb1  1  0.9865  0.5000  0.9760  1
  Cu  Cu2  1  0.3694  0.5000  0.4116  1
  Cu  Cu3  1  0.8692  0.0000  0.2324  1
  Sb  Sb4  2  0.0335  0.2531  0.4491  1
  Sb  Sb5  2  0.5293  0.2448  0.1978  1
  Sb  Sb6  1  0.1959  0.0000  0.0455  1
  Sb  Sb7  1  0.7031  0.5000  0.5971  1
]