data_NaSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.13
_cell_length_b   7.13
_cell_length_c   5.35
_cell_angle_alpha   106.66
_cell_angle_beta   106.66
_cell_angle_gamma   27.56
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSb
_chemical_formula_sum   'Na2 Sb2'
_cell_volume   120.17
_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
  Na  Na0  1  0.53  0.0  0.28  1.0
  Na  Na1  1  0.75  0.0  0.83  1.0
  Sb  Sb2  1  0.4  0.0  0.21  1.0
  Sb  Sb3  1  0.88  0.0  0.9  1.0

data_NaSb
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.4
_cell_length_b   5.35
_cell_length_c   7.13
_cell_angle_alpha   106.66
_cell_angle_beta   103.78
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   NaSb
_chemical_formula_sum   'Na2 Sb2'
_cell_volume   120.17
_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
  Na  Na0  2  0.0  0.22  0.39  1.0
  Sb  Sb1  2  0.0  0.15  0.26  1.0

Na Na Sb Sb