data_[Y2Pu2Np2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Pu  1.2800  1.7500  0.9675
  Np  1.3600  1.7500  1.0000
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.0567]
_cell_length_b [4.3249]
_cell_length_c [6.3437]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.2282]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [YPuNp]
_chemical_formula_sum '[Y2 Pu2 Np2]'
_cell_volume [138.7057]
_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
[
  Y  Y0  2  0.2582  0.7500  0.3963  1
  Pu  Pu1  2  0.3303  0.2500  0.9859  1
  Np  Np2  2  0.1275  0.7500  0.8812  1
]