data_[Rb2Tl2Hg2Te4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [8.0637]
_cell_length_b [6.2716]
_cell_length_c [8.7258]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.7706]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [RbTlHgTe2]
_chemical_formula_sum '[Rb2 Tl2 Hg2 Te4]'
_cell_volume [440.3336]
_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
[
  Rb  Rb0  2  0.5000  0.2340  0.2500  1
  Tl  Tl1  2  0.0000  0.4330  0.2500  1
  Hg  Hg2  2  0.0000  0.0000  0.0000  1
  Te  Te3  4  0.2569  0.2391  0.6058  1
]