data_[Rb4Na8Sn4Hg2]
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
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.1656]
_cell_length_b [8.2933]
_cell_length_c [5.8158]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.3035]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na4Sn2Hg]
_chemical_formula_sum '[Rb4 Na8 Sn4 Hg2]'
_cell_volume [674.2556]
_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  0.1207  0.5000  0.7233  1.0
  Na  Na1  8  0.1505  0.1991  0.2207  1.0
  Sn  Sn2  4  0.1883  0.0000  0.7432  1.0
  Hg  Hg3  2  0.0000  0.0000  0.5000  1.0
]