data_[Zr4Np4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Zr  1.3300  1.5500  0.8600
  Np  1.3600  1.7500  1.0000
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [5.2349]
_cell_length_b [6.4083]
_cell_length_c [5.2869]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [ZrNp]
_chemical_formula_sum '[Zr4 Np4]'
_cell_volume [177.3571]
_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
[
  Zr  Zr0  2  0.0000  0.2448  0.5596  1
  Zr  Zr1  1  0.0000  0.5000  0.0589  1
  Zr  Zr2  1  0.5000  0.5000  0.6091  1
  Np  Np3  2  0.5000  0.2264  0.1121  1
  Np  Np4  1  0.0000  0.0000  0.0578  1
  Np  Np5  1  0.5000  0.0000  0.5975  1
]