data_[Rb2Hg2As2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Hg  2.0000  1.5000  1.2450
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.8545]
_cell_length_b [6.2482]
_cell_length_c [7.5819]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.1036]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbHgAsO4]
_chemical_formula_sum '[Rb2 Hg2 As2 O8]'
_cell_volume [266.4629]
_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  2  0.2982  0.2500  0.0698  1.0
  Hg  Hg1  2  0.1911  0.2500  0.5408  1.0
  As  As2  2  0.2531  0.7500  0.3273  1.0
  O  O3  4  0.0531  0.5367  0.3116  1.0
  O  O4  2  0.3883  0.7500  0.1557  1.0
  O  O5  2  0.4656  0.7500  0.5385  1.0
]