data_[Rb16Na8Ta8Te32]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Ta  1.5000  1.4500  0.8200
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Fddd]
_cell_length_a [7.0161]
_cell_length_b [14.7941]
_cell_length_c [27.6364]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [70]
_chemical_formula_structural [Rb2NaTaTe4]
_chemical_formula_sum '[Rb16 Na8 Ta8 Te32]'
_cell_volume [2868.5756]
_cell_formula_units_Z [8]
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  16  0.0000  0.0000  0.1860  1.0
  Na  Na1  8  0.0000  0.0000  0.0000  1.0
  Ta  Ta2  8  0.0000  0.0000  0.5000  1.0
  Te  Te3  32  0.0426  0.1445  0.6938  1.0
]