data_[Fe2Hg2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Fe  1.8300  1.4000  0.8525
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.6036]
_cell_length_b [3.5219]
_cell_length_c [7.7824]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.9208]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [FeHgO3]
_chemical_formula_sum '[Fe2 Hg2 O6]'
_cell_volume [148.4100]
_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
[
  Fe  Fe0  2  0.1097  0.7500  0.1611  1
  Hg  Hg1  2  0.3243  0.7500  0.6523  1
  O  O2  2  0.0899  0.2500  0.6760  1
  O  O3  2  0.1547  0.2500  0.0725  1
  O  O4  2  0.4207  0.7500  0.3327  1
]