data_NaNb2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.2
_cell_length_b   11.2
_cell_length_c   11.2
_cell_angle_alpha   14.65
_cell_angle_beta   14.65
_cell_angle_gamma   14.65
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaNb2Ag
_chemical_formula_sum   'Na1 Nb2 Ag1'
_cell_volume   78.23
_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
  Na  Na1  1  0.0  0.0  0.0  1.0
  Nb  Nb2  1  0.0  0.0  0.08  1.0
  Nb  Nb3  1  0.0  0.0  0.14  1.0
  Ag  Ag0  1  0.0  0.0  0.61  1.0

data_NaNb2Ag
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.95
_cell_length_b   2.86
_cell_length_c   11.2
_cell_angle_alpha   90.0
_cell_angle_beta   98.47
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaNb2Ag
_chemical_formula_sum   'Na2 Nb4 Ag2'
_cell_volume   156.47
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Na  Na0  2  0.0  0.0  0.0  1.0
  Nb  Nb1  2  0.0  0.0  0.86  1.0
  Nb  Nb2  2  0.0  0.0  0.92  1.0
  Ag  Ag3  2  0.0  0.0  0.39  1.0

Na Nb Nb Ag