data_[K8Ag4Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ag  1.9300  1.6000  1.0867
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.3550]
_cell_length_b [11.8970]
_cell_length_c [8.0619]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.5679]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2AgHg2]
_chemical_formula_sum '[K8 Ag4 Hg8]'
_cell_volume [763.9802]
_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
[
  K  K0  8  0.2305  0.3213  0.2569  1.0
  Ag  Ag1  4  0.0000  0.1177  0.0000  1.0
  Hg  Hg2  4  0.1103  0.0000  0.3574  1.0
  Hg  Hg3  4  0.1478  0.5000  0.8657  1.0
]