data_[La2Zn2Si4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Zn  1.6500  1.3500  0.8800
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.4870]
_cell_length_b [4.1725]
_cell_length_c [8.8562]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3791]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [LaZnSi2]
_chemical_formula_sum '[La2 Zn2 Si4]'
_cell_volume [160.6094]
_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  0.0976  0.2500  0.2016  1.0
  Zn  Zn1  2  0.3276  0.2500  0.6506  1.0
  Si  Si2  2  0.2443  0.7500  0.4908  1.0
  Si  Si3  2  0.4595  0.2500  0.9332  1.0
]