data_Nb2SiPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   3.08
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   110.05
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2SiPb
_chemical_formula_sum   'Nb2 Si1 Pb1'
_cell_volume   80.87
_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
  Nb  Nb0  1  0.51  0.16  0.54  1.0
  Nb  Nb1  1  0.51  0.84  0.54  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.03  0.0  0.0  1.0

data_Nb2SiPb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.08
_cell_length_b   5.28
_cell_length_c   5.28
_cell_angle_alpha   110.05
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2SiPb
_chemical_formula_sum   'Nb2 Si1 Pb1'
_cell_volume   80.87
_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
  Nb  Nb0  1  0.54  0.51  0.16  1.0
  Nb  Nb1  1  0.54  0.51  0.84  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  -0.0  0.03  0.0  1.0

Nb Nb Si Pb