data_K2HgCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.88
_cell_length_b   3.88
_cell_length_c   8.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2HgCl
_chemical_formula_sum   'K2 Hg1 Cl1'
_cell_volume   133.4
_cell_formula_units_Z   1
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  K2  1  0.94  0.94  0.98  1.0
  K  K3  1  0.94  0.94  0.9  1.0
  Hg  Hg1  1  0.0  0.0  0.44  1.0
  Cl  Cl0  1  0.0  0.0  0.0  1.0

data_K2HgCl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.48
_cell_length_b   5.48
_cell_length_c   8.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2HgCl
_chemical_formula_sum   'K4 Hg2 Cl2'
_cell_volume   266.81
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.44  0.5  0.9  1.0
  K  K1  2  0.44  0.5  0.98  1.0
  Hg  Hg2  2  0.0  0.0  0.44  1.0
  Cl  Cl3  2  0.0  0.0  0.0  1.0

K K Hg Cl
K K Hg Cl 0 3 + + + 0 1 o o o 0 2 + + + 1 2 + + o 2 2 + o o 2 2 o + o 2 3 o o o 
K(KCl)Hg is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two 7439-97-6 atoms and two K(KCl) clusters. In each K(KCl) cluster, there are two inequivalent K sites. In the first K site, K(1) is bonded in a single-bond geometry to one K(2) and one Cl(1) atom. The K(1)-K(2) bond length is 0.68 Å. The K(1)-Cl(1) bond length is 0.39 Å. In the second K site, K(2) is bonded in a 2-coordinate geometry to one K(1) and one Cl(1) atom. The K(2)-Cl(1) bond length is 0.94 Å. Cl(1) is bonded in a single-bond geometry to one K(1) and one K(2) atom.