data_Np3Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.28
_cell_length_b   5.28
_cell_length_c   5.28
_cell_angle_alpha   131.44
_cell_angle_beta   131.44
_cell_angle_gamma   71.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Np3Ag
_chemical_formula_sum   'Np3 Ag1'
_cell_volume   81.02
_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  Np1  1  0.0  0.17  0.15  1.0
  Np  Np2  1  0.17  0.0  0.15  1.0
  Np  Np3  1  0.0  0.0  0.3  1.0
  Ag  Ag0  1  0.0  0.0  0.0  1.0

data_Np3Ag
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.14
_cell_length_b   6.14
_cell_length_c   5.28
_cell_angle_alpha   90.0
_cell_angle_beta   125.56
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Np3Ag
_chemical_formula_sum   'Np6 Ag2'
_cell_volume   162.05
_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  4  0.44  0.41  0.02  1.0
  Np  Np1  2  0.2  0.5  0.7  1.0
  Ag  Ag2  2  0.0  0.0  0.0  1.0

Np Np Np Ag