data_[Rb6Tl8Hg4Sb4]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.9282]
_cell_length_b [4.9282]
_cell_length_c [37.7377]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Rb3Tl4(HgSb)2]
_chemical_formula_sum '[Rb6 Tl8 Hg4 Sb4]'
_cell_volume [916.5450]
_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  0.0000  0.0000  0.1745  1.0
  Rb  Rb1  2  0.0000  0.0000  0.0000  1.0
  Tl  Tl2  8  0.0000  0.5000  0.0822  1.0
  Hg  Hg3  4  0.0000  0.0000  0.2736  1.0
  Sb  Sb4  4  0.0000  0.0000  0.3636  1.0
]