data_[Ag4Hg4As4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  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 [Cc]
_cell_length_a [5.6616]
_cell_length_b [10.3425]
_cell_length_c [6.7298]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.6263]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [9]
_chemical_formula_structural [AgHgAsO3]
_chemical_formula_sum '[Ag4 Hg4 As4 O12]'
_cell_volume [371.1727]
_cell_formula_units_Z [4]
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
[
  Ag  Ag0  4  0.0028  0.0328  0.2563  1
  Hg  Hg1  4  0.4734  0.1773  0.2003  1
  As  As2  4  0.4653  0.1491  0.6979  1
  O  O3  4  0.0334  0.2341  0.0209  1
  O  O4  4  0.0572  0.4899  0.0801  1
  O  O5  4  0.1273  0.1322  0.5768  1
]