The structure described by Li10PbSi2O10 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(4), one O(7), and one O(8) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(6)O5 square pyramids,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O5 square pyramid,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(3), one O(6), and two equivalent O(2) atoms to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O5 square pyramid, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(2)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid, and edges with two equivalent Li(2)O4 tetrahedra. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(6), one O(8), and two equivalent O(7) atoms. In the sixth Li site, Li(6) is bonded to one O(3), two equivalent O(2), and two equivalent O(7) atoms to form distorted LiO5 square pyramids that share  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Si(1)O4 tetrahedra, and edges with two equivalent Li(2)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra and edges with two equivalent Li(7)O4 tetrahedra. Pb(1) is bonded in a 3-coordinate geometry to one O(8) and two equivalent O(5) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(4), and two equivalent O(7) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid, and edges with two equivalent Li(1)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(3), one O(6), and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with three equivalent Li(6)O5 square pyramids, corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra, and corners with six equivalent Li(2)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(8) is bonded to one Li(5), two equivalent Li(1), two equivalent Li(4), and one Pb(1) atom to form distorted corner-sharing OLi5Pb octahedra. In the second O site, O(1) is bonded to two equivalent Li(4), two equivalent Li(7), and one Si(1) atom to form distorted OLi4Si trigonal bipyramids that share corners with two equivalent O(8)Li5Pb octahedra and  an edgeedge with one O(1)Li4Si trigonal bipyramid. The corner-sharing octahedral tilt angles are 31°. In the third O site, O(2) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(3), one Li(6), and one Si(2) atom. In the fourth O site, O(3) is bonded in a 5-coordinate geometry to one Li(3), one Li(6), two equivalent Li(2), and one Si(2) atom. In the fifth O site, O(4) is bonded in a distorted pentagonal planar geometry to two equivalent Li(1), two equivalent Li(4), and one Si(1) atom. In the sixth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Li(4), two equivalent Li(7), and two equivalent Pb(1) atoms. In the seventh O site, O(6) is bonded in a 5-coordinate geometry to one Li(3), one Li(5), two equivalent Li(2), and one Si(2) atom. In the eighth O site, O(7) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(5), one Li(6), and one Si(1) atom. is represented by the CIF card [CIF]
data_Li10Si2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.341
_cell_length_b   15.341
_cell_length_c   5.175
_cell_angle_alpha   80.512
_cell_angle_beta   80.512
_cell_angle_gamma   22.987
_symmetry_Int_Tables_number   1
_cell_volume   468.910
_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
  Li  Li0  1  0.087  0.650  0.034  1.0
  Li  Li1  1  0.952  0.438  0.211  1.0
  Li  Li2  1  0.650  0.087  0.034  1.0
  Li  Li3  1  0.731  0.731  0.864  1.0
  Li  Li4  1  0.778  0.351  0.770  1.0
  Li  Li5  1  0.269  0.269  0.136  1.0
  Li  Li6  1  0.913  0.350  0.966  1.0
  Li  Li7  1  0.868  0.868  0.486  1.0
  Li  Li8  1  0.438  0.952  0.211  1.0
  Li  Li9  1  0.132  0.132  0.514  1.0
  Li  Li10  1  0.676  0.676  0.577  1.0
  Li  Li11  1  0.351  0.778  0.770  1.0
  Li  Li12  1  0.508  0.508  0.240  1.0
  Li  Li13  1  0.048  0.562  0.789  1.0
  Li  Li14  1  0.324  0.324  0.423  1.0
  Li  Li15  1  0.222  0.649  0.230  1.0
  Li  Li16  1  0.649  0.222  0.230  1.0
  Li  Li17  1  0.492  0.492  0.760  1.0
  Li  Li18  1  0.350  0.913  0.966  1.0
  Li  Li19  1  0.562  0.048  0.789  1.0
  Si  Si20  1  0.400  0.400  0.695  1.0
  Si  Si21  1  0.600  0.600  0.305  1.0
  Si  Si22  1  0.219  0.219  0.691  1.0
  Si  Si23  1  0.781  0.781  0.309  1.0
  Pb  Pb24  1  0.961  0.961  0.789  1.0
  Pb  Pb25  1  0.039  0.039  0.211  1.0
  O  O26  1  0.450  0.450  0.503  1.0
  O  O27  1  0.420  0.968  0.829  1.0
  O  O28  1  0.728  0.728  0.264  1.0
  O  O29  1  0.405  0.405  0.010  1.0
  O  O30  1  0.748  0.252  0.000  1.0
  O  O31  1  0.968  0.420  0.829  1.0
  O  O32  1  0.252  0.748  0.000  1.0
  O  O33  1  0.550  0.550  0.497  1.0
  O  O34  1  0.786  0.786  0.620  1.0
  O  O35  1  0.589  0.152  0.641  1.0
  O  O36  1  0.848  0.411  0.359  1.0
  O  O37  1  0.032  0.580  0.171  1.0
  O  O38  1  0.152  0.589  0.641  1.0
  O  O39  1  0.214  0.214  0.380  1.0
  O  O40  1  0.411  0.848  0.359  1.0
  O  O41  1  0.272  0.272  0.736  1.0
  O  O42  1  0.908  0.908  0.143  1.0
  O  O43  1  0.580  0.032  0.171  1.0
  O  O44  1  0.595  0.595  0.990  1.0
  O  O45  1  0.092  0.092  0.857  1.0
[/CIF]
.
The structure described by Li10PbSi2O10 is Aluminum carbonitride-derived structured and crystallizes in the monoclinic C2/m space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(4), one O(7), and one O(8) atom to form distorted LiO4 tetrahedra that share corners with two equivalent Li(6)O5 square pyramids,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Si(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O5 square pyramid,  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(3), one O(6), and two equivalent O(2) atoms to form LiO4 tetrahedra that share  a cornercorner with one Li(6)O5 square pyramid, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with four equivalent Si(2)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid, and edges with two equivalent Li(2)O4 tetrahedra. In the fourth Li site, Li(4) is bonded in a 4-coordinate geometry to one O(1), one O(4), one O(5), and one O(8) atom. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(6), one O(8), and two equivalent O(7) atoms. In the sixth Li site, Li(6) is bonded to one O(3), two equivalent O(2), and two equivalent O(7) atoms to form distorted LiO5 square pyramids that share  a cornercorner with one Li(3)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with three equivalent Si(2)O4 tetrahedra, corners with four equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Si(1)O4 tetrahedra, and edges with two equivalent Li(2)O4 tetrahedra. In the seventh Li site, Li(7) is bonded to two equivalent O(1) and two equivalent O(5) atoms to form distorted LiO4 tetrahedra that share corners with two equivalent Si(1)O4 tetrahedra and edges with two equivalent Li(7)O4 tetrahedra. Pb(1) is bonded in a 3-coordinate geometry to one O(8) and two equivalent O(5) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(4), and two equivalent O(7) atoms to form SiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(7)O4 tetrahedra,  an edgeedge with one Li(6)O5 square pyramid, and edges with two equivalent Li(1)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(3), one O(6), and two equivalent O(2) atoms to form SiO4 tetrahedra that share corners with three equivalent Li(6)O5 square pyramids, corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(3)O4 tetrahedra, and corners with six equivalent Li(2)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(8) is bonded to one Li(5), two equivalent Li(1), two equivalent Li(4), and one Pb(1) atom to form distorted corner-sharing OLi5Pb octahedra. In the second O site, O(1) is bonded to two equivalent Li(4), two equivalent Li(7), and one Si(1) atom to form distorted OLi4Si trigonal bipyramids that share corners with two equivalent O(8)Li5Pb octahedra and  an edgeedge with one O(1)Li4Si trigonal bipyramid. The corner-sharing octahedral tilt angles are 31°. In the third O site, O(2) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(3), one Li(6), and one Si(2) atom. In the fourth O site, O(3) is bonded in a 5-coordinate geometry to one Li(3), one Li(6), two equivalent Li(2), and one Si(2) atom. In the fifth O site, O(4) is bonded in a distorted pentagonal planar geometry to two equivalent Li(1), two equivalent Li(4), and one Si(1) atom. In the sixth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Li(4), two equivalent Li(7), and two equivalent Pb(1) atoms. In the seventh O site, O(6) is bonded in a 5-coordinate geometry to one Li(3), one Li(5), two equivalent Li(2), and one Si(2) atom. In the eighth O site, O(7) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(5), one Li(6), and one Si(1) atom. is represented by the CIF card [CIF]
data_Li10Si2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.341
_cell_length_b   15.341
_cell_length_c   5.175
_cell_angle_alpha   80.512
_cell_angle_beta   80.512
_cell_angle_gamma   22.987
_symmetry_Int_Tables_number   1
_cell_volume   468.910
_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
  Li  Li0  1  0.087  0.650  0.034  1.0
  Li  Li1  1  0.952  0.438  0.211  1.0
  Li  Li2  1  0.650  0.087  0.034  1.0
  Li  Li3  1  0.731  0.731  0.864  1.0
  Li  Li4  1  0.778  0.351  0.770  1.0
  Li  Li5  1  0.269  0.269  0.136  1.0
  Li  Li6  1  0.913  0.350  0.966  1.0
  Li  Li7  1  0.868  0.868  0.486  1.0
  Li  Li8  1  0.438  0.952  0.211  1.0
  Li  Li9  1  0.132  0.132  0.514  1.0
  Li  Li10  1  0.676  0.676  0.577  1.0
  Li  Li11  1  0.351  0.778  0.770  1.0
  Li  Li12  1  0.508  0.508  0.240  1.0
  Li  Li13  1  0.048  0.562  0.789  1.0
  Li  Li14  1  0.324  0.324  0.423  1.0
  Li  Li15  1  0.222  0.649  0.230  1.0
  Li  Li16  1  0.649  0.222  0.230  1.0
  Li  Li17  1  0.492  0.492  0.760  1.0
  Li  Li18  1  0.350  0.913  0.966  1.0
  Li  Li19  1  0.562  0.048  0.789  1.0
  Si  Si20  1  0.400  0.400  0.695  1.0
  Si  Si21  1  0.600  0.600  0.305  1.0
  Si  Si22  1  0.219  0.219  0.691  1.0
  Si  Si23  1  0.781  0.781  0.309  1.0
  Pb  Pb24  1  0.961  0.961  0.789  1.0
  Pb  Pb25  1  0.039  0.039  0.211  1.0
  O  O26  1  0.450  0.450  0.503  1.0
  O  O27  1  0.420  0.968  0.829  1.0
  O  O28  1  0.728  0.728  0.264  1.0
  O  O29  1  0.405  0.405  0.010  1.0
  O  O30  1  0.748  0.252  0.000  1.0
  O  O31  1  0.968  0.420  0.829  1.0
  O  O32  1  0.252  0.748  0.000  1.0
  O  O33  1  0.550  0.550  0.497  1.0
  O  O34  1  0.786  0.786  0.620  1.0
  O  O35  1  0.589  0.152  0.641  1.0
  O  O36  1  0.848  0.411  0.359  1.0
  O  O37  1  0.032  0.580  0.171  1.0
  O  O38  1  0.152  0.589  0.641  1.0
  O  O39  1  0.214  0.214  0.380  1.0
  O  O40  1  0.411  0.848  0.359  1.0
  O  O41  1  0.272  0.272  0.736  1.0
  O  O42  1  0.908  0.908  0.143  1.0
  O  O43  1  0.580  0.032  0.171  1.0
  O  O44  1  0.595  0.595  0.990  1.0
  O  O45  1  0.092  0.092  0.857  1.0
[/CIF]
.