The compound described by Pb5Ge3O12 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(3) atoms. In the second Pb site, Pb(2) is bonded to one O(2) and four equivalent O(1) atoms to form distorted PbO5 trigonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra, corners with four equivalent Pb(2)O5 trigonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with three equivalent Pb(2)O5 trigonal bipyramids and  an edgeedge with one Pb(2)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Pb(1) and one Ge(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pb(2) and one Ge(1) atom. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Pb(2), two equivalent Pb(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Ge3Pb5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.280
_cell_length_b   10.280
_cell_length_c   7.277
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   665.978
_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
  Ge  Ge0  1  0.394  0.018  0.750  1.0
  Ge  Ge1  1  0.606  0.982  0.250  1.0
  Ge  Ge2  1  0.982  0.376  0.750  1.0
  Ge  Ge3  1  0.018  0.624  0.250  1.0
  Ge  Ge4  1  0.624  0.606  0.750  1.0
  Ge  Ge5  1  0.376  0.394  0.250  1.0
  Pb  Pb6  1  0.333  0.667  0.507  1.0
  Pb  Pb7  1  0.667  0.333  0.493  1.0
  Pb  Pb8  1  0.667  0.333  0.007  1.0
  Pb  Pb9  1  0.333  0.667  0.993  1.0
  Pb  Pb10  1  0.266  0.252  0.750  1.0
  Pb  Pb11  1  0.734  0.748  0.250  1.0
  Pb  Pb12  1  0.748  0.014  0.750  1.0
  Pb  Pb13  1  0.252  0.986  0.250  1.0
  Pb  Pb14  1  0.986  0.734  0.750  1.0
  Pb  Pb15  1  0.014  0.266  0.250  1.0
  O  O16  1  0.342  0.092  0.561  1.0
  O  O17  1  0.658  0.908  0.439  1.0
  O  O18  1  0.908  0.250  0.561  1.0
  O  O19  1  0.658  0.908  0.061  1.0
  O  O20  1  0.092  0.750  0.439  1.0
  O  O21  1  0.342  0.092  0.939  1.0
  O  O22  1  0.750  0.658  0.561  1.0
  O  O23  1  0.092  0.750  0.061  1.0
  O  O24  1  0.250  0.342  0.439  1.0
  O  O25  1  0.908  0.250  0.939  1.0
  O  O26  1  0.250  0.342  0.061  1.0
  O  O27  1  0.750  0.658  0.939  1.0
  O  O28  1  0.596  0.114  0.750  1.0
  O  O29  1  0.404  0.886  0.250  1.0
  O  O30  1  0.886  0.482  0.750  1.0
  O  O31  1  0.114  0.518  0.250  1.0
  O  O32  1  0.518  0.404  0.750  1.0
  O  O33  1  0.482  0.596  0.250  1.0
  O  O34  1  0.180  0.497  0.750  1.0
  O  O35  1  0.820  0.503  0.250  1.0
  O  O36  1  0.503  0.683  0.750  1.0
  O  O37  1  0.497  0.317  0.250  1.0
  O  O38  1  0.317  0.820  0.750  1.0
  O  O39  1  0.683  0.180  0.250  1.0
[/CIF]
.
The compound described by Pb5Ge3O12 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 6-coordinate geometry to three equivalent O(2) and three equivalent O(3) atoms. In the second Pb site, Pb(2) is bonded to one O(2) and four equivalent O(1) atoms to form distorted PbO5 trigonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra, corners with four equivalent Pb(2)O5 trigonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with three equivalent Pb(2)O5 trigonal bipyramids and  an edgeedge with one Pb(2)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Pb(1) and one Ge(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Pb(2) and one Ge(1) atom. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Pb(2), two equivalent Pb(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Ge3Pb5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.280
_cell_length_b   10.280
_cell_length_c   7.277
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   665.978
_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
  Ge  Ge0  1  0.394  0.018  0.750  1.0
  Ge  Ge1  1  0.606  0.982  0.250  1.0
  Ge  Ge2  1  0.982  0.376  0.750  1.0
  Ge  Ge3  1  0.018  0.624  0.250  1.0
  Ge  Ge4  1  0.624  0.606  0.750  1.0
  Ge  Ge5  1  0.376  0.394  0.250  1.0
  Pb  Pb6  1  0.333  0.667  0.507  1.0
  Pb  Pb7  1  0.667  0.333  0.493  1.0
  Pb  Pb8  1  0.667  0.333  0.007  1.0
  Pb  Pb9  1  0.333  0.667  0.993  1.0
  Pb  Pb10  1  0.266  0.252  0.750  1.0
  Pb  Pb11  1  0.734  0.748  0.250  1.0
  Pb  Pb12  1  0.748  0.014  0.750  1.0
  Pb  Pb13  1  0.252  0.986  0.250  1.0
  Pb  Pb14  1  0.986  0.734  0.750  1.0
  Pb  Pb15  1  0.014  0.266  0.250  1.0
  O  O16  1  0.342  0.092  0.561  1.0
  O  O17  1  0.658  0.908  0.439  1.0
  O  O18  1  0.908  0.250  0.561  1.0
  O  O19  1  0.658  0.908  0.061  1.0
  O  O20  1  0.092  0.750  0.439  1.0
  O  O21  1  0.342  0.092  0.939  1.0
  O  O22  1  0.750  0.658  0.561  1.0
  O  O23  1  0.092  0.750  0.061  1.0
  O  O24  1  0.250  0.342  0.439  1.0
  O  O25  1  0.908  0.250  0.939  1.0
  O  O26  1  0.250  0.342  0.061  1.0
  O  O27  1  0.750  0.658  0.939  1.0
  O  O28  1  0.596  0.114  0.750  1.0
  O  O29  1  0.404  0.886  0.250  1.0
  O  O30  1  0.886  0.482  0.750  1.0
  O  O31  1  0.114  0.518  0.250  1.0
  O  O32  1  0.518  0.404  0.750  1.0
  O  O33  1  0.482  0.596  0.250  1.0
  O  O34  1  0.180  0.497  0.750  1.0
  O  O35  1  0.820  0.503  0.250  1.0
  O  O36  1  0.503  0.683  0.750  1.0
  O  O37  1  0.497  0.317  0.250  1.0
  O  O38  1  0.317  0.820  0.750  1.0
  O  O39  1  0.683  0.180  0.250  1.0
[/CIF]
.