data_Na2Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.72
_cell_length_b   5.72
_cell_length_c   5.72
_cell_angle_alpha   150.19
_cell_angle_beta   125.72
_cell_angle_gamma   63.16
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Al
_chemical_formula_sum   'Na2 Al1'
_cell_volume   74.84
_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  Na1  1  0.0  0.0  0.31  1.0
  Na  Na2  1  0.0  0.0  0.43  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0

data_Na2Al
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.94
_cell_length_b   5.22
_cell_length_c   5.72
_cell_angle_alpha   117.14
_cell_angle_beta   104.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2Al
_chemical_formula_sum   'Na2 Al1'
_cell_volume   74.84
_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  0.57  0.57  0.57  1.0
  Na  Na1  1  0.69  0.69  0.69  1.0
  Al  Al2  1  0.0  0.0  0.0  1.0

Na Na Al