data_[Ag8Hg4As4O16]
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 [Fmm2]
_cell_length_a [6.8569]
_cell_length_b [7.8473]
_cell_length_c [9.8094]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [42]
_chemical_formula_structural [Ag2HgAsO4]
_chemical_formula_sum '[Ag8 Hg4 As4 O16]'
_cell_volume [527.8270]
_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  8  0.2500  0.2500  0.2512  1.0
  Hg  Hg1  4  0.0000  0.0000  0.0480  1.0
  As  As2  4  0.0000  0.0000  0.4902  1.0
  O  O3  8  0.0000  0.1801  0.5915  1.0
  O  O4  8  0.2100  0.0000  0.3883  1.0
]