data_[Ag4Sn8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.4828]
_cell_length_b [11.1381]
_cell_length_c [8.4704]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [AgSn2Pb]
_chemical_formula_sum '[Ag4 Sn8 Pb4]'
_cell_volume [422.9276]
_cell_formula_units_Z [4]
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
[
  Ag  Ag0  4  0.0000  0.2251  0.2500  1
  Sn  Sn1  8  0.0000  0.3611  0.5459  1
  Pb  Pb2  4  0.0000  0.0608  0.7500  1
]