data_[La4Al2Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Al  1.6100  1.2500  0.6750
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [8.5817]
_cell_length_b [8.5817]
_cell_length_c [3.3438]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [La2AlCu2]
_chemical_formula_sum '[La4 Al2 Cu4]'
_cell_volume [246.2537]
_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  4  0.1792  0.3208  0.0000  1
  Al  Al1  2  0.0000  0.0000  0.0000  1
  Cu  Cu2  4  0.1095  0.6095  0.5000  1
]