data_YHf
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.42
_cell_length_b   5.42
_cell_length_c   5.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YHf
_chemical_formula_sum   'Y2 Hf2'
_cell_volume   149.27
_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  0.71  0.56  0.41  1.0
  Y  Y3  1  0.0  0.13  0.47  1.0
  Hf  Hf0  1  0.71  0.56  0.47  1.0
  Hf  Hf1  1  0.0  0.13  0.41  1.0

data_YHf
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.42
_cell_length_b   5.42
_cell_length_c   5.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   YHf
_chemical_formula_sum   'Y2 Hf2'
_cell_volume   149.27
_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  0.35  0.22  0.97  1.0
  Hf  Hf1  2  0.35  0.22  0.03  1.0

Y Y Hf Hf