data_ZnCd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.03
_cell_length_b   3.03
_cell_length_c   8.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnCd
_chemical_formula_sum   'Zn2 Cd2'
_cell_volume   75.51
_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
  Zn  Zn2  1  0.52  0.0  0.82  1.0
  Zn  Zn3  1  0.0  0.52  0.39  1.0
  Cd  Cd0  1  0.52  0.0  0.31  1.0
  Cd  Cd1  1  0.0  0.52  0.9  1.0

data_ZnCd
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   4.29
_cell_length_b   4.29
_cell_length_c   8.21
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   ZnCd
_chemical_formula_sum   'Zn4 Cd4'
_cell_volume   151.01
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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  0.24  0.0  0.29  1.0
  Cd  Cd1  4  0.24  0.0  0.79  1.0

Zn Zn Cd Cd
Zn Zn Cd Cd 0 3 o - o 0 3 o o o 0 3 + - o 0 3 + o o 1 2 - o o 1 2 - + o 1 2 o o o 1 2 o + o 