data_[Rb16Ag4Hg4]
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 [Pnma]
_cell_length_a [10.0438]
_cell_length_b [5.4216]
_cell_length_c [23.2073]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Rb4AgHg]
_chemical_formula_sum '[Rb16 Ag4 Hg4]'
_cell_volume [1263.7262]
_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  0.0078  0.2500  0.9294  1
  Rb  Rb1  4  0.0398  0.2500  0.2211  1
  Rb  Rb2  4  0.1313  0.2500  0.6499  1
  Rb  Rb3  4  0.1399  0.2500  0.4417  1
  Ag  Ag4  4  0.2476  0.7500  0.5512  1
  Hg  Hg5  4  0.2413  0.7500  0.3103  1
]