data_[La2Tb2Al4Si2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Tb  1.1000  1.7500  0.9815
  Al  1.6100  1.2500  0.6750
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [4.4016]
_cell_length_b [4.4639]
_cell_length_c [12.2261]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [LaTbAl2Si]
_chemical_formula_sum '[La2 Tb2 Al4 Si2]'
_cell_volume [240.2239]
_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  0.0000  0.4389  1
  Tb  Tb1  2  0.0000  0.5000  0.1977  1
  Al  Al2  2  0.0000  0.0000  0.0449  1
  Al  Al3  2  0.0000  0.5000  0.6881  1
  Si  Si4  2  0.0000  0.0000  0.8425  1
]