data_KZn2Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   4.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KZn2Hg
_chemical_formula_sum   'K1 Zn2 Hg1'
_cell_volume   109.95
_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  K1  1  0.0  0.0  0.0  1.0
  Zn  Zn2  1  0.0  0.4  0.39  1.0
  Zn  Zn3  1  0.4  0.0  0.39  1.0
  Hg  Hg0  1  0.4  0.4  0.0  1.0

data_KZn2Hg
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.78
_cell_length_b   6.78
_cell_length_c   4.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KZn2Hg
_chemical_formula_sum   'K2 Zn4 Hg2'
_cell_volume   219.9
_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  0.0  0.0  0.0  1.0
  Zn  Zn1  4  0.2  0.2  0.39  1.0
  Hg  Hg2  2  0.4  0.0  0.0  1.0

K Zn Zn Hg
KHgZn2 crystallizes in the monoclinic Cm space group. K(1) is bonded in a 3-coordinate geometry to three equivalent Hg(1) and six equivalent Zn(1) atoms. There is one shorter (2.68 Å) and two longer (3.46 Å) K(1)-Hg(1) bond lengths. There are two shorter (2.68 Å) and four longer (3.46 Å) K(1)-Zn(1) bond lengths. Hg(1) is bonded in a 5-coordinate geometry to three equivalent K(1) and two equivalent Zn(1) atoms. Both Hg(1)-Zn(1) bond lengths are 2.68 Å. Zn(1) is bonded in a 5-coordinate geometry to three equivalent K(1), one Hg(1), and one Zn(1) atom. The Zn(1)-Zn(1) bond length is 2.68 Å.