data_Na3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.36
_cell_length_b   8.69
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na3P
_chemical_formula_sum   'Na12 P4'
_cell_volume   384.49
_cell_formula_units_Z   4
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  0.15  0.52  0.38  1.0
  Na  Na1  1  0.03  0.17  0.02  1.0
  Na  Na2  1  0.33  0.52  0.27  1.0
  Na  Na3  1  0.21  0.17  0.92  1.0
  Na  Na4  1  0.35  0.08  0.17  1.0
  Na  Na5  1  0.83  0.6  0.52  1.0
  Na  Na6  1  0.53  0.95  0.77  1.0
  Na  Na7  1  0.01  0.74  0.13  1.0
  Na  Na8  1  0.01  0.6  0.13  1.0
  Na  Na9  1  0.53  0.08  0.77  1.0
  Na  Na10  1  0.83  0.74  0.52  1.0
  Na  Na11  1  0.35  0.95  0.17  1.0
  P  P12  1  0.18  0.52  0.93  1.0
  P  P13  1  0.36  0.17  0.28  1.0
  P  P14  1  0.0  0.52  0.01  1.0
  P  P15  1  0.18  0.17  0.37  1.0

data_Na3P
_symmetry_space_group_name_H-M   P-1
_cell_length_a   5.29
_cell_length_b   8.36
_cell_length_c   8.69
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Na3P
_chemical_formula_sum   'Na12 P4'
_cell_volume   384.49
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  2  0.02  0.17  0.74  1.0
  Na  Na1  2  0.02  0.17  0.6  1.0
  Na  Na2  2  0.12  0.15  0.17  1.0
  Na  Na3  2  0.23  0.97  0.17  1.0
  Na  Na4  2  0.37  0.65  0.26  1.0
  Na  Na5  2  0.37  0.65  0.4  1.0
  P  P6  2  0.13  0.18  0.83  1.0
  P  P7  2  0.22  1.0  0.83  1.0

Na Na Na Na Na Na Na Na Na Na Na Na P P P P
Na Na Na Na Na Na Na Na Na Na Na Na P P P P 0 2 o o o 1 3 o o - 4 11 o - o 4 13 o o o 5 10 o o o 6 9 o + o 7 8 o o o 8 14 o o o 12 14 o o + 13 15 o o o 