data_[Hg2Bi2I2O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Hg  2.0000  1.5000  1.2450
  Bi  2.0200  1.6000  1.0350
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.5453]
_cell_length_b [4.3831]
_cell_length_c [7.7399]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.6320]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [HgBiIO2]
_chemical_formula_sum '[Hg2 Bi2 I2 O4]'
_cell_volume [255.8674]
_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
[
  Hg  Hg0  2  0.3426  0.2500  0.0903  1.0
  Bi  Bi1  2  0.3533  0.2500  0.6133  1.0
  I  I2  2  0.0309  0.2500  0.2513  1.0
  O  O3  2  0.4442  0.7500  0.5828  1.0
  O  O4  2  0.4944  0.7500  0.1434  1.0
]