data_[Na8Hg4Te16As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Te  2.1000  1.4000  1.2933
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [12.1771]
_cell_length_b [12.3572]
_cell_length_c [8.4850]
_cell_angle_alpha [90.0000]
_cell_angle_beta [130.7807]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Na2HgTe4As]
_chemical_formula_sum '[Na8 Hg4 Te16 As4]'
_cell_volume [966.7978]
_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
[
  Na  Na0  4  0.0000  0.5000  0.0000  1
  Na  Na1  4  0.2500  0.2500  0.5000  1
  Hg  Hg2  4  0.2500  0.2500  0.0000  1
  Te  Te3  8  0.0267  0.2371  0.0223  1
  Te  Te4  8  0.2204  0.0030  0.9576  1
  As  As5  4  0.0000  0.0000  0.0000  1
]