Ti5ZnBi2(Pb2O9)2 crystallizes in the monoclinic Cm space group. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(11) atoms. In the second Ti site, Ti(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(4), and two equivalent O(5) atoms. In the fourth Ti site, Ti(4) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(5), and two equivalent O(7) atoms. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(10), one O(12), two equivalent O(11), and two equivalent O(9) atoms. Zn(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(7), and two equivalent O(9) atoms. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 7-coordinate geometry to one O(10), two equivalent O(1), two equivalent O(11), and two equivalent O(12) atoms. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the third Pb site, Pb(3) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the fourth Pb site, Pb(4) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(7), and two equivalent O(9) atoms. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(11), and two equivalent O(9) atoms. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ti(1), one Ti(2), one Pb(1), and one Pb(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Ti(1), one Pb(3), and two equivalent Pb(2) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Ti(2), one Pb(2), and two equivalent Pb(3) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ti(2), one Ti(3), one Pb(2), and one Pb(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Ti(3), one Ti(4), one Pb(3), and one Pb(4) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Ti(3) and one Pb(3) atom. In the seventh O site, O(7) is bonded to one Ti(4), one Zn(1), one Pb(4), and one Bi(1) atom to form distorted OTiZnBiPb tetrahedra that share corners with two equivalent O(9)TiZnBi2 tetrahedra,  an edgeedge with one O(9)TiZnBi2 tetrahedra, and edges with two equivalent O(7)TiZnBiPb tetrahedra. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Ti(4) and one Bi(2) atom. In the ninth O site, O(9) is bonded to one Ti(5), one Zn(1), one Bi(1), and one Bi(2) atom to form distorted OTiZnBi2 tetrahedra that share corners with two equivalent O(7)TiZnBiPb tetrahedra,  an edgeedge with one O(7)TiZnBiPb tetrahedra, and edges with two equivalent O(9)TiZnBi2 tetrahedra. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Ti(5), one Zn(1), one Pb(1), and one Bi(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(5), one Pb(1), and one Bi(2) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one Ti(5) and two equivalent Pb(1) atoms.
Ti5ZnBi2(Pb2O9)2 crystallizes in the monoclinic Cm space group. There are five inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(11) atoms. The Ti(1)-O(2) bond length is 1.77 Å. Both Ti(1)-O(1) bond lengths are 1.93 Å. Both Ti(1)-O(11) bond lengths are 2.03 Å. In the second Ti site, Ti(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. The Ti(2)-O(3) bond length is 1.77 Å. Both Ti(2)-O(1) bond lengths are 1.99 Å. Both Ti(2)-O(4) bond lengths are 1.98 Å. In the third Ti site, Ti(3) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(4), and two equivalent O(5) atoms. The Ti(3)-O(6) bond length is 1.76 Å. Both Ti(3)-O(4) bond lengths are 2.00 Å. Both Ti(3)-O(5) bond lengths are 1.97 Å. In the fourth Ti site, Ti(4) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(5), and two equivalent O(7) atoms. The Ti(4)-O(8) bond length is 1.78 Å. Both Ti(4)-O(5) bond lengths are 1.97 Å. Both Ti(4)-O(7) bond lengths are 1.97 Å. In the fifth Ti site, Ti(5) is bonded in a 6-coordinate geometry to one O(10), one O(12), two equivalent O(11), and two equivalent O(9) atoms. The Ti(5)-O(10) bond length is 2.43 Å. The Ti(5)-O(12) bond length is 1.77 Å. Both Ti(5)-O(11) bond lengths are 1.96 Å. Both Ti(5)-O(9) bond lengths are 2.01 Å. Zn(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(7), and two equivalent O(9) atoms. The Zn(1)-O(10) bond length is 1.94 Å. Both Zn(1)-O(7) bond lengths are 2.07 Å. Both Zn(1)-O(9) bond lengths are 2.14 Å. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 7-coordinate geometry to one O(10), two equivalent O(1), two equivalent O(11), and two equivalent O(12) atoms. The Pb(1)-O(10) bond length is 2.61 Å. Both Pb(1)-O(1) bond lengths are 2.62 Å. Both Pb(1)-O(11) bond lengths are 2.56 Å. Both Pb(1)-O(12) bond lengths are 2.82 Å. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. The Pb(2)-O(3) bond length is 2.78 Å. Both Pb(2)-O(1) bond lengths are 2.54 Å. Both Pb(2)-O(2) bond lengths are 2.83 Å. Both Pb(2)-O(4) bond lengths are 2.48 Å. In the third Pb site, Pb(3) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. The Pb(3)-O(2) bond length is 2.79 Å. The Pb(3)-O(6) bond length is 2.79 Å. Both Pb(3)-O(3) bond lengths are 2.84 Å. Both Pb(3)-O(4) bond lengths are 2.53 Å. Both Pb(3)-O(5) bond lengths are 2.51 Å. In the fourth Pb site, Pb(4) is bonded in a 4-coordinate geometry to two equivalent O(5) and two equivalent O(7) atoms. Both Pb(4)-O(5) bond lengths are 2.56 Å. Both Pb(4)-O(7) bond lengths are 2.43 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(7), and two equivalent O(9) atoms. The Bi(1)-O(10) bond length is 2.72 Å. Both Bi(1)-O(7) bond lengths are 2.28 Å. Both Bi(1)-O(9) bond lengths are 2.29 Å. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(11), and two equivalent O(9) atoms. The Bi(2)-O(8) bond length is 2.64 Å. Both Bi(2)-O(11) bond lengths are 2.39 Å. Both Bi(2)-O(9) bond lengths are 2.30 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ti(1), one Ti(2), one Pb(1), and one Pb(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Ti(1), one Pb(3), and two equivalent Pb(2) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Ti(2), one Pb(2), and two equivalent Pb(3) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ti(2), one Ti(3), one Pb(2), and one Pb(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Ti(3), one Ti(4), one Pb(3), and one Pb(4) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Ti(3) and one Pb(3) atom. In the seventh O site, O(7) is bonded to one Ti(4), one Zn(1), one Pb(4), and one Bi(1) atom to form distorted OTiZnBiPb tetrahedra that share corners with two equivalent O(9)TiZnBi2 tetrahedra,  an edgeedge with one O(9)TiZnBi2 tetrahedra, and edges with two equivalent O(7)TiZnBiPb tetrahedra. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one Ti(4) and one Bi(2) atom. In the ninth O site, O(9) is bonded to one Ti(5), one Zn(1), one Bi(1), and one Bi(2) atom to form distorted OTiZnBi2 tetrahedra that share corners with two equivalent O(7)TiZnBiPb tetrahedra,  an edgeedge with one O(7)TiZnBiPb tetrahedra, and edges with two equivalent O(9)TiZnBi2 tetrahedra. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Ti(5), one Zn(1), one Pb(1), and one Bi(1) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Ti(1), one Ti(5), one Pb(1), and one Bi(2) atom. In the twelfth O site, O(12) is bonded in a single-bond geometry to one Ti(5) and two equivalent Pb(1) atoms.