data_Nb2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.97
_cell_length_b   6.97
_cell_length_c   3.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   140.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Nb2Ag
_chemical_formula_sum   'Nb4 Ag2'
_cell_volume   107.66
_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
  Nb  Nb2  1  0.35  0.94  0.62  1.0
  Nb  Nb3  1  0.35  0.06  0.87  1.0
  Nb  Nb4  1  0.35  0.16  0.62  1.0
  Nb  Nb5  1  0.35  0.84  0.87  1.0
  Ag  Ag0  1  0.35  0.53  0.62  1.0
  Ag  Ag1  1  0.35  0.47  0.87  1.0

data_Nb2Ag
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.49
_cell_length_b   4.69
_cell_length_c   6.97
_cell_angle_alpha   109.67
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Nb2Ag
_chemical_formula_sum   'Nb4 Ag2'
_cell_volume   107.66
_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
  Nb  Nb0  2  0.37  0.06  0.06  1.0
  Nb  Nb1  2  0.37  0.84  0.84  1.0
  Ag  Ag2  2  0.37  0.47  0.47  1.0

Nb Nb Nb Nb Ag Ag