data_[Rb4Sr4Hg56]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sr  0.9500  2.0000  1.3200
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [11.2700]
_cell_length_b [11.4716]
_cell_length_c [15.5478]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [RbSrHg14]
_chemical_formula_sum '[Rb4 Sr4 Hg56]'
_cell_volume [2010.0876]
_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  0.2500  0.6088  1
  Sr  Sr1  4  0.0000  0.0000  0.0000  1
  Hg  Hg2  16  0.1321  0.0137  0.7960  1
  Hg  Hg3  16  0.1454  0.5445  0.5888  1
  Hg  Hg4  8  0.1278  0.2500  0.2903  1
  Hg  Hg5  8  0.1408  0.2500  0.0898  1
  Hg  Hg6  8  0.1479  0.2500  0.8897  1
]