data_[La2Si2Ag4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.3667]
_cell_length_b [3.4397]
_cell_length_c [11.8496]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [LaSiAg2]
_chemical_formula_sum '[La2 Si2 Ag4]'
_cell_volume [177.9818]
_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  0.4604  1
  Si  Si1  2  0.5000  0.0000  0.0755  1
  Ag  Ag2  2  0.0000  0.0000  0.1947  1
  Ag  Ag3  2  0.5000  0.0000  0.7657  1
]