data_[Nd4Si8Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nd  1.1400  1.8500  1.2765
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [6.9078]
_cell_length_b [4.2432]
_cell_length_c [10.9973]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [NdSi2Ag]
_chemical_formula_sum '[Nd4 Si8 Ag4]'
_cell_volume [322.3381]
_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
[
  Nd  Nd0  4  0.1445  0.2500  0.8527  1.0
  Si  Si1  4  0.0282  0.2500  0.3370  1.0
  Si  Si2  4  0.1766  0.2500  0.1445  1.0
  Ag  Ag3  4  0.1519  0.2500  0.5566  1.0
]