data_[Rb4Na2Hg4H12]
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
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.9973]
_cell_length_b [5.9661]
_cell_length_c [7.3244]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.9564]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na(HgH3)2]
_chemical_formula_sum '[Rb4 Na2 Hg4 H12]'
_cell_volume [420.4874]
_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  0.2021  0.5000  0.1767  1
  Na  Na1  2  0.0000  0.5000  0.5000  1
  Hg  Hg2  4  0.0443  0.0000  0.2327  1
  H  H3  8  0.0439  0.2565  0.7717  1
  H  H4  4  0.2300  0.0000  0.3634  1
]