data_[Ta4Hg2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.8998]
_cell_length_b [3.8224]
_cell_length_c [6.9966]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.1319]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ta2HgO6]
_chemical_formula_sum '[Ta4 Hg2 O12]'
_cell_volume [241.6232]
_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
[
  Ta  Ta0  4  0.1795  0.0000  0.6319  1
  Hg  Hg1  2  0.0000  0.0000  0.0000  1
  O  O2  4  0.0086  0.0000  0.6865  1
  O  O3  4  0.1702  0.5000  0.1071  1
  O  O4  4  0.1970  0.5000  0.5646  1
]