data_NpP3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.29
_cell_length_b   5.29
_cell_length_c   5.29
_cell_angle_alpha   138.33
_cell_angle_beta   138.33
_cell_angle_gamma   60.4
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NpP3
_chemical_formula_sum   'Np1 P3'
_cell_volume   64.64
_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
  Np  Np0  1  0.0  0.0  0.57  1.0
  P  P1  1  0.88  0.0  0.28  1.0
  P  P2  1  0.0  0.88  0.28  1.0
  P  P3  1  0.0  0.0  0.0  1.0

data_NpP3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.32
_cell_length_b   5.32
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   120.2
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NpP3
_chemical_formula_sum   'Np2 P6'
_cell_volume   129.29
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Np  Np0  2  0.43  0.0  0.43  1.0
  P  P1  4  0.16  0.44  0.6  1.0
  P  P2  2  0.0  0.0  0.0  1.0

Np P P P
Np P P P 0 1 - o o 0 2 o - o 0 3 o o + 1 2 + - o 1 3 + o o 2 3 o + o 