data_MgZnNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.9
_cell_length_b   2.9
_cell_length_c   6.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgZnNi2
_chemical_formula_sum   'Mg1 Zn1 Ni2'
_cell_volume   54.01
_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
  Mg  Mg0  1  0.0  0.0  0.97  1.0
  Zn  Zn3  1  0.45  0.45  0.92  1.0
  Ni  Ni1  1  0.45  0.45  0.18  1.0
  Ni  Ni2  1  0.0  0.0  0.54  1.0

data_MgZnNi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.11
_cell_length_b   4.11
_cell_length_c   6.4
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgZnNi2
_chemical_formula_sum   'Mg2 Zn2 Ni4'
_cell_volume   108.01
_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
  Mg  Mg0  2  0.0  0.0  0.97  1.0
  Zn  Zn1  2  0.45  0.0  0.92  1.0
  Ni  Ni2  2  0.0  0.0  0.54  1.0
  Ni  Ni3  2  0.45  0.0  0.18  1.0

Mg Zn Ni Ni
Mg Zn Ni Ni 0 1 - - o 0 1 - o o 0 1 o - o 0 1 o o o 0 2 - o + 0 2 o - + 0 2 o o + 0 3 o o o 1 2 o o + 1 3 + + o 1 3 + o o 1 3 o + o 1 3 o o o 2 3 + + o 2 3 + o o 2 3 o + o 2 3 o o o 3 3 + o o 3 3 o + o 