data_[Rb4Ta4Cu8Te16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ta  1.5000  1.4500  0.8200
  Cu  1.9000  1.3500  0.8200
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Ama2]
_cell_length_a [8.4395]
_cell_length_b [20.9210]
_cell_length_c [6.1041]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [40]
_chemical_formula_structural [RbTa(CuTe2)2]
_chemical_formula_sum '[Rb4 Ta4 Cu8 Te16]'
_cell_volume [1077.7636]
_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  0.2500  0.1865  0.5075  1
  Ta  Ta1  4  0.2500  0.3956  0.2504  1
  Cu  Cu2  4  0.0000  0.0000  0.7614  1
  Cu  Cu3  4  0.2500  0.3949  0.7498  1
  Te  Te4  8  0.0069  0.1056  0.9995  1
  Te  Te5  4  0.2500  0.2919  0.0028  1
  Te  Te6  4  0.2500  0.4994  0.9971  1
]