data_Na2SnSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.99
_cell_length_b   5.99
_cell_length_c   5.99
_cell_angle_alpha   135.94
_cell_angle_beta   132.72
_cell_angle_gamma   66.61
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SnSb
_chemical_formula_sum   'Na2 Sn1 Sb1'
_cell_volume   108.31
_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  0.4  0.5  1.0
  Na  Na1  1  0.25  0.0  0.51  1.0
  Sn  Sn3  1  0.0  0.0  0.0  1.0
  Sb  Sb2  1  0.0  0.0  0.01  1.0

data_Na2SnSb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.5
_cell_length_b   4.81
_cell_length_c   5.99
_cell_angle_alpha   113.64
_cell_angle_beta   112.03
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SnSb
_chemical_formula_sum   'Na2 Sn1 Sb1'
_cell_volume   108.31
_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  0.51  0.26  1.0
  Na  Na1  1  0.6  0.09  0.09  1.0
  Sn  Sn2  1  0.0  0.0  0.0  1.0
  Sb  Sb3  1  0.0  0.01  0.01  1.0

Na Na Sn Sb
Na Na Sn Sb 0 3 o + + 0 3 o o o 0 2 o + + 0 2 o o o 0 1 o o o 1 3 o o o 1 2 o o o 2 3 o o o 