data_Zn2BiCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   3.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn2BiCl
_chemical_formula_sum   'Zn2 Bi1 Cl1'
_cell_volume   90.33
_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
  Zn  Zn2  1  0.0  0.57  0.7  1.0
  Zn  Zn3  1  0.57  0.0  0.7  1.0
  Bi  Bi0  1  0.57  0.57  0.0  1.0
  Cl  Cl1  1  0.0  0.0  0.0  1.0

data_Zn2BiCl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.28
_cell_length_b   7.28
_cell_length_c   3.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Zn2BiCl
_chemical_formula_sum   'Zn4 Bi2 Cl2'
_cell_volume   180.67
_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
  Zn  Zn0  4  0.29  0.29  0.7  1.0
  Bi  Bi1  2  0.07  0.5  0.0  1.0
  Cl  Cl2  2  0.0  0.0  0.0  1.0

Zn Zn Bi Cl
Zn Zn Bi Cl 0 2 - o + 0 3 o + + 1 2 o - + 1 3 + o + 