data_NaP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.48
_cell_length_b   5.48
_cell_length_c   3.86
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   132.04
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaP
_chemical_formula_sum   'Na2 P2'
_cell_volume   85.99
_cell_formula_units_Z   2
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  0.23  0.42  0.97  1.0
  Na  Na1  1  0.23  0.58  0.9  1.0
  P  P2  1  0.23  0.39  0.97  1.0
  P  P3  1  0.23  0.61  0.9  1.0

data_NaP
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.86
_cell_length_b   4.45
_cell_length_c   5.48
_cell_angle_alpha   113.98
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   NaP
_chemical_formula_sum   'Na2 P2'
_cell_volume   85.99
_cell_formula_units_Z   2
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  0.47  0.42  0.42  1.0
  P  P1  2  0.47  0.39  0.39  1.0

Na Na P P