data_Na2AlP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.95
_cell_length_b   4.62
_cell_length_c   5.75
_cell_angle_alpha   90.0
_cell_angle_beta   90.55
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2AlP
_chemical_formula_sum   'Na2 Al1 P1'
_cell_volume   78.18
_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  0.53  0.31  0.54  1.0
  Na  Na2  1  0.36  0.31  0.2  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  P  P3  1  0.97  0.0  0.87  1.0

data_Na2AlP
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.95
_cell_length_b   4.62
_cell_length_c   5.75
_cell_angle_alpha   90.0
_cell_angle_beta   90.55
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2AlP
_chemical_formula_sum   'Na2 Al1 P1'
_cell_volume   78.18
_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  0.36  0.31  0.2  1.0
  Na  Na1  1  0.53  0.31  0.54  1.0
  Al  Al2  1  0.0  0.0  0.0  1.0
  P  P3  1  0.97  0.0  0.87  1.0

Na Na Al P
Na Na Al P 0 1 o o o 1 2 o o o 2 3 - o - 