data_[K4Cu4Hg2Br12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  Hg  2.0000  1.5000  1.2450
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.6704]
_cell_length_b [7.6789]
_cell_length_c [7.7640]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.4368]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Cu2HgBr6]
_chemical_formula_sum '[K4 Cu4 Hg2 Br12]'
_cell_volume [702.6939]
_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
[
  K  K0  4  0.2351  0.5000  0.2097  1.0
  Cu  Cu1  4  0.0470  0.0000  0.2006  1.0
  Hg  Hg2  2  0.0000  0.5000  0.5000  1.0
  Br  Br3  8  0.0586  0.2508  0.8076  1.0
  Br  Br4  4  0.2464  0.0000  0.3522  1.0
]