data_ZnNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   3.97
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnNi2
_chemical_formula_sum   'Zn2 Ni4'
_cell_volume   93.92
_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  Zn4  1  0.0  0.0  0.0  1.0
  Zn  Zn5  1  0.43  0.43  0.98  1.0
  Ni  Ni0  1  0.59  0.59  0.0  1.0
  Ni  Ni1  1  0.28  0.28  0.0  1.0
  Ni  Ni2  1  0.02  0.85  0.98  1.0
  Ni  Ni3  1  0.85  0.02  0.98  1.0

data_ZnNi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.88
_cell_length_b   6.88
_cell_length_c   3.97
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ZnNi2
_chemical_formula_sum   'Zn4 Ni8'
_cell_volume   187.84
_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+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  0.0  0.0  0.0  1.0
  Zn  Zn1  2  0.43  0.0  0.98  1.0
  Ni  Ni2  4  0.43  0.41  0.98  1.0
  Ni  Ni3  2  0.09  0.5  0.0  1.0
  Ni  Ni4  2  0.28  0.0  0.0  1.0

Zn Zn Ni Ni Ni Ni