data_K2ZnHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.75
_cell_length_b   6.75
_cell_length_c   6.75
_cell_angle_alpha   141.67
_cell_angle_beta   128.1
_cell_angle_gamma   66.33
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2ZnHg
_chemical_formula_sum   'K2 Zn1 Hg1'
_cell_volume   148.16
_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  0.01  1.0
  K  K2  1  0.22  0.0  0.11  1.0
  Zn  Zn3  1  0.0  0.0  0.26  1.0
  Hg  Hg0  1  0.0  0.96  0.23  1.0

data_K2ZnHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.43
_cell_length_b   5.91
_cell_length_c   6.75
_cell_angle_alpha   115.95
_cell_angle_beta   109.16
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2ZnHg
_chemical_formula_sum   'K2 Zn1 Hg1'
_cell_volume   148.16
_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  0.0  0.01  0.01  1.0
  K  K1  1  0.0  0.11  0.9  1.0
  Zn  Zn2  1  0.0  0.26  0.26  1.0
  Hg  Hg3  1  0.04  0.27  0.27  1.0

K K Zn Hg