data_[Rb10Na2Hg12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.4135]
_cell_length_b [18.0741]
_cell_length_c [7.0602]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.8843]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb5NaHg6]
_chemical_formula_sum '[Rb10 Na2 Hg12]'
_cell_volume [1080.7184]
_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  0.1197  0.5000  1
  Rb  Rb1  4  0.0000  0.3067  0.0000  1
  Rb  Rb2  2  0.0000  0.5000  0.5000  1
  Na  Na3  2  0.0000  0.0000  0.0000  1
  Hg  Hg4  8  0.1810  0.3121  0.6037  1
  Hg  Hg5  4  0.1809  0.5000  0.0920  1
]