The crystal structure described by MgPb5 crystallizes in the trigonal R32 space group. Mg(1) is bonded to six Pb(1,1,1) and six equivalent Pb(2) atoms to form MgPb12 cuboctahedra that share corners with six equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Mg(1)Pb12 cuboctahedra; edges with twelve Pb(1,1,1)Mg2Pb10 cuboctahedra; and faces with twelve Pb(1,1,1)Mg2Pb10 cuboctahedra. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1)Mg2Pb10 cuboctahedra. In the second Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1,1)Mg2Pb10 cuboctahedra. In the third Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1)Mg2Pb10 cuboctahedra. In the fourth Pb site, Pb(2) is bonded in a distorted trigonal planar geometry to three equivalent Mg(1) and six Pb(1,1,1) atoms. is represented by the CIF card [CIF]
data_MgPb5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.754
_cell_length_b   6.754
_cell_length_c   6.754
_cell_angle_alpha   52.041
_cell_angle_beta   52.041
_cell_angle_gamma   52.041
_symmetry_Int_Tables_number   1
_cell_volume   177.071
_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
  Mg  Mg0  1  0.500  0.500  0.500  1.0
  Pb  Pb1  1  0.336  0.000  0.664  1.0
  Pb  Pb2  1  0.000  0.664  0.336  1.0
  Pb  Pb3  1  0.664  0.336  0.000  1.0
  Pb  Pb4  1  0.165  0.165  0.165  1.0
  Pb  Pb5  1  0.835  0.835  0.835  1.0
[/CIF]
.
The crystal structure described by MgPb5 crystallizes in the trigonal R32 space group. Mg(1) is bonded to six Pb(1,1,1) and six equivalent Pb(2) atoms to form MgPb12 cuboctahedra that share corners with six equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Mg(1)Pb12 cuboctahedra; edges with twelve Pb(1,1,1)Mg2Pb10 cuboctahedra; and faces with twelve Pb(1,1,1)Mg2Pb10 cuboctahedra. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1)Mg2Pb10 cuboctahedra. In the second Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1,1)Mg2Pb10 cuboctahedra. In the third Pb site, Pb(1) is bonded to two equivalent Mg(1); four equivalent Pb(2); and six Pb(1,1) atoms to form distorted PbMg2Pb10 cuboctahedra that share corners with eighteen Pb(1,1,1)Mg2Pb10 cuboctahedra; edges with four equivalent Mg(1)Pb12 cuboctahedra; edges with six equivalent Pb(1)Mg2Pb10 cuboctahedra; faces with four equivalent Mg(1)Pb12 cuboctahedra; and faces with eight Pb(1,1)Mg2Pb10 cuboctahedra. In the fourth Pb site, Pb(2) is bonded in a distorted trigonal planar geometry to three equivalent Mg(1) and six Pb(1,1,1) atoms. is represented by the CIF card [CIF]
data_MgPb5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.754
_cell_length_b   6.754
_cell_length_c   6.754
_cell_angle_alpha   52.041
_cell_angle_beta   52.041
_cell_angle_gamma   52.041
_symmetry_Int_Tables_number   1
_cell_volume   177.071
_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
  Mg  Mg0  1  0.500  0.500  0.500  1.0
  Pb  Pb1  1  0.336  0.000  0.664  1.0
  Pb  Pb2  1  0.000  0.664  0.336  1.0
  Pb  Pb3  1  0.664  0.336  0.000  1.0
  Pb  Pb4  1  0.165  0.165  0.165  1.0
  Pb  Pb5  1  0.835  0.835  0.835  1.0
[/CIF]
.