data_[Rb4Tl2Hg2I12]
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
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.4476]
_cell_length_b [8.7842]
_cell_length_c [14.7548]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.8827]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Rb2TlHgI6]
_chemical_formula_sum '[Rb4 Tl2 Hg2 I12]'
_cell_volume [898.1600]
_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  4  0.2270  0.5738  0.7508  1
  Tl  Tl1  2  0.0000  0.0000  0.5000  1
  Hg  Hg2  2  0.5000  0.0000  0.0000  1
  I  I3  4  0.1681  0.6962  0.4597  1
  I  I4  4  0.2614  0.2085  0.4586  1
  I  I5  4  0.3398  0.5079  0.2575  1
]