data_[Sr4Ta2Hg2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  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 [10.5937]
_cell_length_b [5.7235]
_cell_length_c [5.7464]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.9962]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2TaHgO6]
_chemical_formula_sum '[Sr4 Ta2 Hg2 O12]'
_cell_volume [298.6676]
_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
[
  Sr  Sr0  4  0.2471  0.0000  0.2269  1
  Ta  Ta1  2  0.0000  0.5000  0.0000  1
  Hg  Hg2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.0648  0.2561  0.8287  1
  O  O4  4  0.2051  0.5000  0.3074  1
]