data_[Na4Si2Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [6.2412]
_cell_length_b [9.5656]
_cell_length_c [18.5186]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Na2SiTe3]
_chemical_formula_sum '[Na4 Si2 Te6]'
_cell_volume [1105.5753]
_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
[
  Na  Na0  4  0.1522  0.3261  0.5581  1
  Si  Si1  2  0.4886  0.5000  0.4803  1
  Te  Te2  4  0.0461  0.2223  0.4045  1
  Te  Te3  2  0.2308  0.0000  0.5945  1
]