data_Na2TaSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.38
_cell_length_b   11.38
_cell_length_c   11.38
_cell_angle_alpha   15.6
_cell_angle_beta   15.6
_cell_angle_gamma   15.6
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2TaSb
_chemical_formula_sum   'Na2 Ta1 Sb1'
_cell_volume   92.8
_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  0.0  0.46  1.0
  Na  Na1  1  0.0  0.0  0.25  1.0
  Ta  Ta3  1  0.0  0.0  0.85  1.0
  Sb  Sb2  1  0.0  0.0  0.0  1.0

data_Na2TaSb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.35
_cell_length_b   3.09
_cell_length_c   11.38
_cell_angle_alpha   90.0
_cell_angle_beta   99.02
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2TaSb
_chemical_formula_sum   'Na4 Ta2 Sb2'
_cell_volume   185.59
_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  0.54  1.0
  Na  Na1  2  0.0  0.0  0.75  1.0
  Ta  Ta2  2  0.0  0.0  0.15  1.0
  Sb  Sb3  2  0.0  0.0  0.0  1.0

Na Na Ta Sb