data_[Tb4Np4Si16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Np  1.3600  1.7500  1.0000
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [8.1867]
_cell_length_b [14.5792]
_cell_length_c [3.8594]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [TbNpSi4]
_chemical_formula_sum '[Tb4 Np4 Si16]'
_cell_volume [460.6375]
_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
[
  Tb  Tb0  4  0.0779  0.1416  0.0000  1
  Np  Np1  4  0.0921  0.4360  0.0000  1
  Si  Si2  4  0.0050  0.7083  0.5000  1
  Si  Si3  4  0.1313  0.9646  0.5000  1
  Si  Si4  4  0.1665  0.5760  0.5000  1
  Si  Si5  4  0.2238  0.8128  0.5000  1
]