data_K2HgSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.47
_cell_length_b   4.97
_cell_length_c   8.47
_cell_angle_alpha   90.0
_cell_angle_beta   90.8
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2HgSb
_chemical_formula_sum   'K2 Hg1 Sb1'
_cell_volume   145.89
_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  0.64  0.48  0.53  1.0
  K  K2  1  0.71  0.48  0.93  1.0
  Hg  Hg0  1  0.94  0.0  0.23  1.0
  Sb  Sb3  1  0.0  0.0  0.0  1.0

data_K2HgSb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.47
_cell_length_b   4.97
_cell_length_c   8.47
_cell_angle_alpha   90.0
_cell_angle_beta   90.8
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2HgSb
_chemical_formula_sum   'K2 Hg1 Sb1'
_cell_volume   145.89
_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  K0  1  0.64  0.48  0.53  1.0
  K  K1  1  0.71  0.48  0.93  1.0
  Hg  Hg2  1  0.94  0.0  0.23  1.0
  Sb  Sb3  1  0.0  0.0  0.0  1.0

K K Hg Sb
K2HgSb crystallizes in the triclinic P1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one K(2), two equivalent K(1), and two equivalent Hg(1) atoms. The K(1)-K(2) bond length is 3.42 Å. Both K(1)-K(1) bond lengths are 3.47 Å. There is one shorter (3.65 Å) and one longer (3.76 Å) K(1)-Hg(1) bond length. In the second K site, K(2) is bonded in a 2-coordinate geometry to one K(1) and two equivalent Sb(1) atoms. There is one shorter (2.65 Å) and one longer (2.81 Å) K(2)-Sb(1) bond length. Hg(1) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Sb(1) atom. The Hg(1)-Sb(1) bond length is 1.99 Å. Sb(1) is bonded in a 3-coordinate geometry to two equivalent K(2) and one Hg(1) atom.