data_K2ZrHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.42
_cell_length_b   4.47
_cell_length_c   10.07
_cell_angle_alpha   90.0
_cell_angle_beta   92.84
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2ZrHg
_chemical_formula_sum   'K2 Zr1 Hg1'
_cell_volume   153.5
_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  0.87  0.0  0.36  1.0
  K  K2  1  0.57  0.23  0.07  1.0
  Zr  Zr3  1  0.73  0.0  0.9  1.0
  Hg  Hg0  1  0.41  0.23  0.82  1.0

data_K2ZrHg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.42
_cell_length_b   4.47
_cell_length_c   10.07
_cell_angle_alpha   90.0
_cell_angle_beta   92.84
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2ZrHg
_chemical_formula_sum   'K2 Zr1 Hg1'
_cell_volume   153.5
_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  0.57  0.23  0.07  1.0
  K  K1  1  0.87  0.0  0.36  1.0
  Zr  Zr2  1  0.73  0.0  0.9  1.0
  Hg  Hg3  1  0.41  0.23  0.82  1.0

K K Zr Hg