data_[Na18Te12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [R-3c]
_cell_length_a [8.6909]
_cell_length_b [8.6909]
_cell_length_c [14.4735]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [167]
_chemical_formula_structural [Na3Te2]
_chemical_formula_sum '[Na18 Te12]'
_cell_volume [946.7387]
_cell_formula_units_Z [6]
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
[
  Na  Na0  18  0.0000  0.2965  0.2500  1.0
  Te  Te1  12  0.0000  0.0000  0.1206  1.0
]