data_[Rb4Tl4Hg6]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.1157]
_cell_length_b [5.6303]
_cell_length_c [8.4023]
_cell_angle_alpha [90.0000]
_cell_angle_beta [123.0430]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Tl2Hg3]
_chemical_formula_sum '[Rb4 Tl4 Hg6]'
_cell_volume [520.1141]
_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  0.1677  0.0000  0.7624  1.0
  Tl  Tl1  4  0.1137  0.0000  0.2241  1.0
  Hg  Hg2  4  0.0987  0.5000  0.4388  1.0
  Hg  Hg3  2  0.0000  0.5000  0.0000  1.0
]