Ti2Pb4Sb2O13 crystallizes in the orthorhombic Imm2 space group. Ti(1) is bonded to one O(3), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, edges with two equivalent Pb(1)O7 hexagonal pyramids, and edges with four equivalent Pb(2)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 40-43°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(2), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms to form distorted PbO7 hexagonal pyramids that share  a cornercorner with one Pb(1)O7 hexagonal pyramid, corners with two equivalent Pb(2)O7 hexagonal pyramids,  an edgeedge with one Pb(1)O7 hexagonal pyramid, edges with two equivalent Pb(2)O7 hexagonal pyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. In the second Pb site, Pb(2) is bonded to one O(3), one O(4), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form distorted PbO7 hexagonal pyramids that share  a cornercorner with one Pb(2)O7 hexagonal pyramid, corners with two equivalent Pb(1)O7 hexagonal pyramids,  an edgeedge with one Pb(2)O7 hexagonal pyramid, edges with two equivalent Pb(1)O7 hexagonal pyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. Sb(1) is bonded to one O(2), one O(7), two equivalent O(1), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Pb(2)O7 hexagonal pyramids, and edges with four equivalent Pb(1)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 42-46°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Pb(1), one Pb(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Pb(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Ti(1) and two equivalent Pb(2) atoms. In the fourth O site, O(4) is bonded in a tetrahedral geometry to two equivalent Pb(1) and two equivalent Pb(2) atoms. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Ti(1), one Pb(1), one Pb(2), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Ti(1) and two equivalent Pb(2) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Pb(1) and two equivalent Sb(1) atoms.
Ti2Pb4Sb2O13 crystallizes in the orthorhombic Imm2 space group. Ti(1) is bonded to one O(3), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, edges with two equivalent Pb(1)O7 hexagonal pyramids, and edges with four equivalent Pb(2)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 40-43°. The Ti(1)-O(3) bond length is 1.97 Å. The Ti(1)-O(6) bond length is 1.99 Å. Both Ti(1)-O(1) bond lengths are 1.99 Å. Both Ti(1)-O(5) bond lengths are 2.03 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(2), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms to form distorted PbO7 hexagonal pyramids that share  a cornercorner with one Pb(1)O7 hexagonal pyramid, corners with two equivalent Pb(2)O7 hexagonal pyramids,  an edgeedge with one Pb(1)O7 hexagonal pyramid, edges with two equivalent Pb(2)O7 hexagonal pyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. The Pb(1)-O(2) bond length is 2.64 Å. The Pb(1)-O(4) bond length is 2.32 Å. The Pb(1)-O(7) bond length is 2.64 Å. Both Pb(1)-O(1) bond lengths are 2.68 Å. Both Pb(1)-O(5) bond lengths are 2.67 Å. In the second Pb site, Pb(2) is bonded to one O(3), one O(4), one O(6), two equivalent O(1), and two equivalent O(5) atoms to form distorted PbO7 hexagonal pyramids that share  a cornercorner with one Pb(2)O7 hexagonal pyramid, corners with two equivalent Pb(1)O7 hexagonal pyramids,  an edgeedge with one Pb(2)O7 hexagonal pyramid, edges with two equivalent Pb(1)O7 hexagonal pyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. The Pb(2)-O(3) bond length is 2.72 Å. The Pb(2)-O(4) bond length is 2.33 Å. The Pb(2)-O(6) bond length is 2.70 Å. Both Pb(2)-O(1) bond lengths are 2.68 Å. Both Pb(2)-O(5) bond lengths are 2.66 Å. Sb(1) is bonded to one O(2), one O(7), two equivalent O(1), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Pb(2)O7 hexagonal pyramids, and edges with four equivalent Pb(1)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 42-46°. The Sb(1)-O(2) bond length is 2.02 Å. The Sb(1)-O(7) bond length is 2.04 Å. Both Sb(1)-O(1) bond lengths are 2.00 Å. Both Sb(1)-O(5) bond lengths are 2.01 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Pb(1), one Pb(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Pb(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Ti(1) and two equivalent Pb(2) atoms. In the fourth O site, O(4) is bonded in a tetrahedral geometry to two equivalent Pb(1) and two equivalent Pb(2) atoms. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Ti(1), one Pb(1), one Pb(2), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Ti(1) and two equivalent Pb(2) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to two equivalent Pb(1) and two equivalent Sb(1) atoms.