The crystal structure described by AgPb3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Ag(1) is bonded to four equivalent Pb(2) and eight equivalent Pb(1) atoms to form AgPb12 cuboctahedra that share corners with four equivalent Ag(1)Pb12 cuboctahedra, corners with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, edges with eight equivalent Ag(1)Pb12 cuboctahedra, edges with sixteen equivalent Pb(1)Ag4Pb8 cuboctahedra, faces with four equivalent Ag(1)Pb12 cuboctahedra, faces with six equivalent Pb(2)Ag4Pb8 cuboctahedra, and faces with eight equivalent Pb(1)Ag4Pb8 cuboctahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to four equivalent Ag(1), four equivalent Pb(1), and four equivalent Pb(2) atoms to form distorted PbAg4Pb8 cuboctahedra that share corners with twelve equivalent Pb(1)Ag4Pb8 cuboctahedra, edges with eight equivalent Ag(1)Pb12 cuboctahedra, edges with eight equivalent Pb(1)Ag4Pb8 cuboctahedra, edges with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, faces with four equivalent Ag(1)Pb12 cuboctahedra, faces with four equivalent Pb(2)Ag4Pb8 cuboctahedra, and faces with ten equivalent Pb(1)Ag4Pb8 cuboctahedra. In the second Pb site, Pb(2) is bonded to four equivalent Ag(1) and eight equivalent Pb(1) atoms to form PbAg4Pb8 cuboctahedra that share corners with four equivalent Pb(2)Ag4Pb8 cuboctahedra, corners with eight equivalent Ag(1)Pb12 cuboctahedra, edges with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, edges with sixteen equivalent Pb(1)Ag4Pb8 cuboctahedra, faces with four equivalent Pb(2)Ag4Pb8 cuboctahedra, faces with six equivalent Ag(1)Pb12 cuboctahedra, and faces with eight equivalent Pb(1)Ag4Pb8 cuboctahedra. is represented by the CIF card [CIF]
data_AgPb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.869
_cell_length_b   5.869
_cell_length_c   5.869
_cell_angle_alpha   130.606
_cell_angle_beta   130.606
_cell_angle_gamma   72.440
_symmetry_Int_Tables_number   1
_cell_volume   113.875
_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
  Ag  Ag0  1  0.000  0.000  0.000  1.0
  Pb  Pb1  1  0.750  0.250  0.500  1.0
  Pb  Pb2  1  0.250  0.750  0.500  1.0
  Pb  Pb3  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by AgPb3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Ag(1) is bonded to four equivalent Pb(2) and eight equivalent Pb(1) atoms to form AgPb12 cuboctahedra that share corners with four equivalent Ag(1)Pb12 cuboctahedra, corners with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, edges with eight equivalent Ag(1)Pb12 cuboctahedra, edges with sixteen equivalent Pb(1)Ag4Pb8 cuboctahedra, faces with four equivalent Ag(1)Pb12 cuboctahedra, faces with six equivalent Pb(2)Ag4Pb8 cuboctahedra, and faces with eight equivalent Pb(1)Ag4Pb8 cuboctahedra. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to four equivalent Ag(1), four equivalent Pb(1), and four equivalent Pb(2) atoms to form distorted PbAg4Pb8 cuboctahedra that share corners with twelve equivalent Pb(1)Ag4Pb8 cuboctahedra, edges with eight equivalent Ag(1)Pb12 cuboctahedra, edges with eight equivalent Pb(1)Ag4Pb8 cuboctahedra, edges with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, faces with four equivalent Ag(1)Pb12 cuboctahedra, faces with four equivalent Pb(2)Ag4Pb8 cuboctahedra, and faces with ten equivalent Pb(1)Ag4Pb8 cuboctahedra. In the second Pb site, Pb(2) is bonded to four equivalent Ag(1) and eight equivalent Pb(1) atoms to form PbAg4Pb8 cuboctahedra that share corners with four equivalent Pb(2)Ag4Pb8 cuboctahedra, corners with eight equivalent Ag(1)Pb12 cuboctahedra, edges with eight equivalent Pb(2)Ag4Pb8 cuboctahedra, edges with sixteen equivalent Pb(1)Ag4Pb8 cuboctahedra, faces with four equivalent Pb(2)Ag4Pb8 cuboctahedra, faces with six equivalent Ag(1)Pb12 cuboctahedra, and faces with eight equivalent Pb(1)Ag4Pb8 cuboctahedra. is represented by the CIF card [CIF]
data_AgPb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.869
_cell_length_b   5.869
_cell_length_c   5.869
_cell_angle_alpha   130.606
_cell_angle_beta   130.606
_cell_angle_gamma   72.440
_symmetry_Int_Tables_number   1
_cell_volume   113.875
_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
  Ag  Ag0  1  0.000  0.000  0.000  1.0
  Pb  Pb1  1  0.750  0.250  0.500  1.0
  Pb  Pb2  1  0.250  0.750  0.500  1.0
  Pb  Pb3  1  0.500  0.500  0.000  1.0
[/CIF]
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