data_YPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.6
_cell_length_b   6.6
_cell_length_c   5.82
_cell_angle_alpha   114.25
_cell_angle_beta   114.25
_cell_angle_gamma   31.02
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YPb
_chemical_formula_sum   'Y2 Pb2'
_cell_volume   118.06
_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  0.26  0.0  0.09  1.0
  Y  Y3  1  0.98  0.0  0.17  1.0
  Pb  Pb0  1  0.37  0.0  0.74  1.0
  Pb  Pb1  1  0.86  0.0  0.52  1.0

data_YPb
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.53
_cell_length_b   5.82
_cell_length_c   6.6
_cell_angle_alpha   114.25
_cell_angle_beta   105.51
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   YPb
_chemical_formula_sum   'Y2 Pb2'
_cell_volume   118.06
_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  0.0  0.04  0.86  1.0
  Pb  Pb1  2  0.0  0.39  0.74  1.0

Y Y Pb Pb