TiZnBiO5 crystallizes in the monoclinic P2_1/c space group. Ti(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(1) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O6 pentagonal pyramid, edges with two equivalent Bi(1)O6 pentagonal pyramids, and  an edgeedge with one Ti(1)O5 trigonal bipyramid. Zn(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), and two equivalent O(4) atoms. Bi(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one Ti(1)O5 trigonal bipyramid,  an edgeedge with one Bi(1)O6 pentagonal pyramid, and edges with two equivalent Ti(1)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ti(1) and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ti(1), one Zn(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ti(1), one Zn(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded to two equivalent Zn(1) and two equivalent Bi(1) atoms to form distorted edge-sharing OZn2Bi2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ti(1), one Zn(1), and one Bi(1) atom.
TiZnBiO5 crystallizes in the monoclinic P2_1/c space group. Ti(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(1) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one Bi(1)O6 pentagonal pyramid, edges with two equivalent Bi(1)O6 pentagonal pyramids, and  an edgeedge with one Ti(1)O5 trigonal bipyramid. The Ti(1)-O(2) bond length is 1.86 Å. The Ti(1)-O(3) bond length is 1.90 Å. The Ti(1)-O(5) bond length is 1.85 Å. There is one shorter (1.89 Å) and one longer (2.26 Å) Ti(1)-O(1) bond length. Zn(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(5), and two equivalent O(4) atoms. The Zn(1)-O(2) bond length is 2.07 Å. The Zn(1)-O(3) bond length is 2.01 Å. The Zn(1)-O(5) bond length is 2.04 Å. There is one shorter (2.09 Å) and one longer (2.29 Å) Zn(1)-O(4) bond length. Bi(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted BiO6 pentagonal pyramids that share  a cornercorner with one Ti(1)O5 trigonal bipyramid,  an edgeedge with one Bi(1)O6 pentagonal pyramid, and edges with two equivalent Ti(1)O5 trigonal bipyramids. The Bi(1)-O(1) bond length is 2.25 Å. The Bi(1)-O(2) bond length is 2.29 Å. The Bi(1)-O(3) bond length is 2.27 Å. The Bi(1)-O(5) bond length is 2.35 Å. There is one shorter (2.22 Å) and one longer (2.23 Å) Bi(1)-O(4) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Ti(1) and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ti(1), one Zn(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ti(1), one Zn(1), and one Bi(1) atom. In the fourth O site, O(4) is bonded to two equivalent Zn(1) and two equivalent Bi(1) atoms to form distorted edge-sharing OZn2Bi2 trigonal pyramids. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ti(1), one Zn(1), and one Bi(1) atom.