TiNb2Zn(PbO3)4 crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one O(1), one O(4), and four equivalent O(7) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(3), and four equivalent O(5) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. In the second Nb site, Nb(2) is bonded to one O(2), one O(4), and four equivalent O(8) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. Zn(1) is bonded to one O(2), one O(3), and four equivalent O(6) atoms to form ZnO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 3-coordinate geometry to one O(3) and two equivalent O(6) atoms. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(7), and two equivalent O(8) atoms. In the third Pb site, Pb(3) is bonded in a 4-coordinate geometry to four equivalent O(6) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(1), and one Pb(4) atom. In the second O site, O(2) is bonded in a linear geometry to one Nb(2) and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Nb(1), one Zn(1), and one Pb(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(2), and one Pb(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent Nb(1) atoms. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Zn(1), one Pb(1), and two equivalent Pb(3) atoms. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Ti(1), one Pb(2), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Nb(2) and one Pb(2) atom.
TiNb2Zn(PbO3)4 crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one O(1), one O(4), and four equivalent O(7) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. The Ti(1)-O(1) bond length is 1.99 Å. The Ti(1)-O(4) bond length is 1.95 Å. There are two shorter (1.91 Å) and two longer (2.15 Å) Ti(1)-O(7) bond lengths. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(3), and four equivalent O(5) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. The Nb(1)-O(1) bond length is 2.16 Å. The Nb(1)-O(3) bond length is 1.91 Å. There are two shorter (1.96 Å) and two longer (2.11 Å) Nb(1)-O(5) bond lengths. In the second Nb site, Nb(2) is bonded to one O(2), one O(4), and four equivalent O(8) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. The Nb(2)-O(2) bond length is 1.87 Å. The Nb(2)-O(4) bond length is 2.21 Å. There are two shorter (1.95 Å) and two longer (2.14 Å) Nb(2)-O(8) bond lengths. Zn(1) is bonded to one O(2), one O(3), and four equivalent O(6) atoms to form ZnO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. The Zn(1)-O(2) bond length is 2.34 Å. The Zn(1)-O(3) bond length is 2.38 Å. There are two shorter (2.00 Å) and two longer (2.06 Å) Zn(1)-O(6) bond lengths. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 3-coordinate geometry to one O(3) and two equivalent O(6) atoms. The Pb(1)-O(3) bond length is 2.50 Å. Both Pb(1)-O(6) bond lengths are 2.47 Å. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(7), and two equivalent O(8) atoms. The Pb(2)-O(4) bond length is 2.59 Å. Both Pb(2)-O(7) bond lengths are 2.76 Å. Both Pb(2)-O(8) bond lengths are 2.69 Å. In the third Pb site, Pb(3) is bonded in a 4-coordinate geometry to four equivalent O(6) atoms. There are two shorter (2.48 Å) and two longer (2.66 Å) Pb(3)-O(6) bond lengths. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(7) atoms. The Pb(4)-O(1) bond length is 2.55 Å. Both Pb(4)-O(7) bond lengths are 2.62 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(1), and one Pb(4) atom. In the second O site, O(2) is bonded in a linear geometry to one Nb(2) and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Nb(1), one Zn(1), and one Pb(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(2), and one Pb(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent Nb(1) atoms. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Zn(1), one Pb(1), and two equivalent Pb(3) atoms. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Ti(1), one Pb(2), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Nb(2) and one Pb(2) atom.