data_ZnAgCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.82
_cell_length_b   6.4
_cell_length_c   3.38
_cell_angle_alpha   82.24
_cell_angle_beta   68.36
_cell_angle_gamma   29.4
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnAgCl
_chemical_formula_sum   'Zn1 Ag1 Cl1'
_cell_volume   61.35
_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  0.71  0.91  0.05  1.0
  Ag  Ag0  1  0.71  0.91  0.15  1.0
  Cl  Cl1  1  0.71  0.91  0.46  1.0

data_ZnAgCl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.42
_cell_length_b   12.33
_cell_length_c   3.38
_cell_angle_alpha   90.0
_cell_angle_beta   120.38
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ZnAgCl
_chemical_formula_sum   'Zn2 Ag2 Cl2'
_cell_volume   122.7
_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  2  0.21  0.5  0.76  1.0
  Ag  Ag1  2  0.21  0.5  0.85  1.0
  Cl  Cl2  2  0.21  0.5  0.17  1.0

Zn Ag Cl
Zn Ag Cl 0 1 o o o 1 2 o o o 