data_[Pb4C2N4Cl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pb  2.3300  1.8000  1.1225
  C  2.5500  0.7000  0.3000
  N  3.0400  0.6500  0.6300
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.7620]
_cell_length_b [4.2084]
_cell_length_c [7.6503]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.5764]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pb2C(NCl)2]
_chemical_formula_sum '[Pb4 C2 N4 Cl4]'
_cell_volume [311.5511]
_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
[
  Pb  Pb0  4  0.1902  0.5000  0.2771  1.0
  C  C1  2  0.0000  0.0000  0.5000  1.0
  N  N2  4  0.1193  0.0000  0.4615  1.0
  Cl  Cl3  4  0.1290  0.5000  0.8406  1.0
]