data_[La2Nd2Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Nd  1.1400  1.8500  1.2765
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.9985]
_cell_length_b [5.9818]
_cell_length_c [8.3462]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [LaNdSi2]
_chemical_formula_sum '[La2 Nd2 Si4]'
_cell_volume [199.6244]
_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
[
  La  La0  2  0.0000  0.1350  0.6803  1.0
  Nd  Nd1  2  0.5000  0.3636  0.3189  1.0
  Si  Si2  2  0.0000  0.3730  0.0344  1.0
  Si  Si3  2  0.5000  0.1369  0.9664  1.0
]