data_YNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.84
_cell_length_b   5.28
_cell_length_c   3.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YNi
_chemical_formula_sum   'Y2 Ni2'
_cell_volume   79.84
_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
  Y  Y2  1  0.0  0.64  0.44  1.0
  Y  Y3  1  0.92  0.0  0.5  1.0
  Ni  Ni0  1  0.0  0.0  0.41  1.0
  Ni  Ni1  1  0.92  0.64  0.53  1.0

data_YNi
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.84
_cell_length_b   3.94
_cell_length_c   5.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   YNi
_chemical_formula_sum   'Y2 Ni2'
_cell_volume   79.84
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Y  Y0  2  0.04  0.47  0.82  1.0
  Ni  Ni1  2  0.04  0.44  0.18  1.0

Y Y Ni Ni