data_LaZnPb4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.71
_cell_length_b   6.71
_cell_length_c   6.71
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaZnPb4
_chemical_formula_sum   'La1 Zn1 Pb4'
_cell_volume   213.48
_cell_formula_units_Z   1
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  1  0.37  0.37  0.37  1.0
  Zn  Zn5  1  0.0  0.0  0.0  1.0
  Pb  Pb1  1  0.56  0.56  0.93  1.0
  Pb  Pb2  1  0.56  0.93  0.56  1.0
  Pb  Pb3  1  0.93  0.56  0.56  1.0
  Pb  Pb4  1  0.93  0.93  0.93  1.0

data_LaZnPb4
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.71
_cell_length_b   6.71
_cell_length_c   16.43
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   LaZnPb4
_chemical_formula_sum   'La3 Zn3 Pb12'
_cell_volume   640.43
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.63  1.0
  Zn  Zn1  3  0.0  0.0  0.0  1.0
  Pb  Pb2  9  0.09  0.54  0.98  1.0
  Pb  Pb3  3  0.0  0.0  0.07  1.0

La Zn Pb Pb Pb Pb
La Zn Pb Pb Pb Pb 0 4 - o o 0 3 o - o 0 2 o o - 1 5 - - - 2 4 o o o 2 3 o o o 3 4 o o o 
LaPb3PbZn is Halite, Rock Salt structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three LaPb3 clusters and three PbZn clusters. In each LaPb3 cluster, La(1) is bonded in a trigonal planar geometry to three equivalent Pb(1) atoms. All La(1)-Pb(1) bond lengths are 2.48 Å. Pb(1) is bonded in a distorted single-bond geometry to one La(1) atom. In each PbZn cluster, Zn(1) is bonded in a single-bond geometry to one Pb(2) atom. The Zn(1)-Pb(2) bond length is 1.19 Å. Pb(2) is bonded in a single-bond geometry to one Zn(1) atom.