data_NaSrNb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.82
_cell_length_b   4.82
_cell_length_c   7.74
_cell_angle_alpha   92.64
_cell_angle_beta   92.64
_cell_angle_gamma   38.06
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSrNb2
_chemical_formula_sum   'Na1 Sr1 Nb2'
_cell_volume   110.76
_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  Na0  1  0.7  0.0  0.56  1.0
  Sr  Sr3  1  0.4  0.0  0.17  1.0
  Nb  Nb1  1  0.72  0.0  0.15  1.0
  Nb  Nb2  1  0.01  0.0  0.45  1.0

data_NaSrNb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.14
_cell_length_b   4.82
_cell_length_c   7.74
_cell_angle_alpha   92.64
_cell_angle_beta   90.0
_cell_angle_gamma   109.03
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSrNb2
_chemical_formula_sum   'Na1 Sr1 Nb2'
_cell_volume   110.76
_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  Na0  1  0.0  0.3  0.44  1.0
  Sr  Sr1  1  0.0  0.6  0.83  1.0
  Nb  Nb2  1  0.0  0.28  0.85  1.0
  Nb  Nb3  1  0.0  0.99  0.55  1.0

Na Sr Nb Nb