TaZnBiO5 crystallizes in the monoclinic P2_1/c space group. Ta(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form TaO4 tetrahedra that share corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-51°. Zn(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form ZnO6 octahedra that share corners with four equivalent Ta(1)O4 tetrahedra and  an edgeedge with one Zn(1)O6 octahedra. Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), and two equivalent O(4) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Ta(1), one Zn(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one Zn(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ta(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to two equivalent Zn(1) and two equivalent Bi(1) atoms to form edge-sharing OZn2Bi2 tetrahedra. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ta(1), one Zn(1), and one Bi(1) atom.
TaZnBiO5 crystallizes in the monoclinic P2_1/c space group. Ta(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form TaO4 tetrahedra that share corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 24-51°. The Ta(1)-O(1) bond length is 1.88 Å. The Ta(1)-O(2) bond length is 1.89 Å. The Ta(1)-O(3) bond length is 1.84 Å. The Ta(1)-O(5) bond length is 1.88 Å. Zn(1) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form ZnO6 octahedra that share corners with four equivalent Ta(1)O4 tetrahedra and  an edgeedge with one Zn(1)O6 octahedra. The Zn(1)-O(1) bond length is 2.35 Å. The Zn(1)-O(2) bond length is 2.18 Å. The Zn(1)-O(3) bond length is 2.03 Å. The Zn(1)-O(5) bond length is 2.12 Å. There is one shorter (2.11 Å) and one longer (2.19 Å) Zn(1)-O(4) bond length. Bi(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), and two equivalent O(4) atoms. The Bi(1)-O(1) bond length is 2.36 Å. The Bi(1)-O(2) bond length is 2.35 Å. The Bi(1)-O(5) bond length is 2.47 Å. There is one shorter (2.16 Å) and one longer (2.29 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 one Ta(1), one Zn(1), and one Bi(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1), one Zn(1), and one Bi(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ta(1) and one Zn(1) atom. In the fourth O site, O(4) is bonded to two equivalent Zn(1) and two equivalent Bi(1) atoms to form edge-sharing OZn2Bi2 tetrahedra. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ta(1), one Zn(1), and one Bi(1) atom.