data_[Rb4Sn4Hg12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [7.4295]
_cell_length_b [11.3516]
_cell_length_c [7.9563]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbSnHg3]
_chemical_formula_sum '[Rb4 Sn4 Hg12]'
_cell_volume [671.0127]
_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
[
  Rb  Rb0  4  0.0000  0.2392  0.2500  1.0
  Sn  Sn1  4  0.0000  0.3711  0.7500  1.0
  Hg  Hg2  8  0.2353  0.5000  0.0000  1.0
  Hg  Hg3  4  0.0000  0.1112  0.7500  1.0
]