data_Na3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.01
_cell_length_b   6.01
_cell_length_c   5.56
_cell_angle_alpha   107.82
_cell_angle_beta   107.82
_cell_angle_gamma   37.79
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na3Sn
_chemical_formula_sum   'Na3 Sn1'
_cell_volume   116.3
_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  0.0  1.0
  Na  Na1  1  0.14  0.0  0.44  1.0
  Na  Na2  1  0.42  0.0  0.82  1.0
  Sn  Sn3  1  0.78  0.0  0.63  1.0

data_Na3Sn
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.89
_cell_length_b   5.56
_cell_length_c   6.01
_cell_angle_alpha   107.82
_cell_angle_beta   108.89
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na3Sn
_chemical_formula_sum   'Na3 Sn1'
_cell_volume   116.3
_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  0.0  1.0
  Na  Na1  1  0.0  0.44  0.14  1.0
  Na  Na2  1  0.0  0.82  0.42  1.0
  Sn  Sn3  1  0.0  0.63  0.78  1.0

Na Na Na Sn