data_K2Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.53
_cell_length_b   7.53
_cell_length_c   9.84
_cell_angle_alpha   122.74
_cell_angle_beta   122.74
_cell_angle_gamma   39.45
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2Zn
_chemical_formula_sum   'K4 Zn2'
_cell_volume   289.93
_cell_formula_units_Z   2
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  0.34  0.0  0.31  1.0
  K  K1  1  0.11  0.0  0.88  1.0
  K  K2  1  0.41  0.0  0.17  1.0
  K  K3  1  0.18  0.0  0.74  1.0
  Zn  Zn4  1  0.92  0.0  0.13  1.0
  Zn  Zn5  1  0.6  0.0  0.92  1.0

data_K2Zn
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.08
_cell_length_b   7.53
_cell_length_c   8.57
_cell_angle_alpha   75.07
_cell_angle_beta   72.75
_cell_angle_gamma   70.28
_symmetry_Int_Tables_number   2
_chemical_formula_structural   K2Zn
_chemical_formula_sum   'K4 Zn2'
_cell_volume   289.93
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  2  0.0  0.0  0.15  1.0
  K  K1  2  0.0  0.2  0.72  1.0
  Zn  Zn2  2  0.0  0.45  0.89  1.0

K K K K Zn Zn
K K K K Zn Zn 0 2 o o o 1 3 o o o 4 5 o o - 