data_[Rb4Ag2Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [5.0518]
_cell_length_b [5.2920]
_cell_length_c [13.1660]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Rb2AgHg]
_chemical_formula_sum '[Rb4 Ag2 Hg2]'
_cell_volume [351.9800]
_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  0.0000  0.0000  0.9820  1.0
  Rb  Rb1  2  0.5000  0.0000  0.2695  1.0
  Ag  Ag2  2  0.0000  0.0000  0.6834  1.0
  Hg  Hg3  2  0.5000  0.0000  0.5644  1.0
]