ZnZrNb2O8 is Hydrophilite-derived structured and crystallizes in the monoclinic P2 space group. Zr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZrO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Nb(2)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-52°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with four equivalent Zr(1)O6 octahedra, corners with four equivalent Zn(1)O6 octahedra, and edges with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. In the second Nb site, Nb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted NbO6 octahedra that share corners with four equivalent Zr(1)O6 octahedra, corners with four equivalent Zn(1)O6 octahedra, and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. Zn(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted ZnO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Nb(2)O6 octahedra, and edges with two equivalent Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zr(1), one Nb(1), and one Nb(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Nb(1), one Nb(2), and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Zr(1), one Nb(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zr(1), one Nb(2), and one Zn(1) atom.
ZnZrNb2O8 is Hydrophilite-derived structured and crystallizes in the monoclinic P2 space group. Zr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZrO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Nb(2)O6 octahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-52°. Both Zr(1)-O(1) bond lengths are 2.07 Å. Both Zr(1)-O(3) bond lengths are 2.11 Å. Both Zr(1)-O(4) bond lengths are 2.20 Å. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with four equivalent Zr(1)O6 octahedra, corners with four equivalent Zn(1)O6 octahedra, and edges with two equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. Both Nb(1)-O(1) bond lengths are 2.02 Å. Both Nb(1)-O(2) bond lengths are 2.15 Å. Both Nb(1)-O(3) bond lengths are 1.92 Å. In the second Nb site, Nb(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted NbO6 octahedra that share corners with four equivalent Zr(1)O6 octahedra, corners with four equivalent Zn(1)O6 octahedra, and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-55°. Both Nb(2)-O(1) bond lengths are 2.25 Å. Both Nb(2)-O(2) bond lengths are 2.00 Å. Both Nb(2)-O(4) bond lengths are 1.90 Å. Zn(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted ZnO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Nb(2)O6 octahedra, and edges with two equivalent Zr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-56°. Both Zn(1)-O(2) bond lengths are 2.05 Å. Both Zn(1)-O(3) bond lengths are 2.36 Å. Both Zn(1)-O(4) bond lengths are 2.14 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Zr(1), one Nb(1), and one Nb(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Nb(1), one Nb(2), and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Zr(1), one Nb(1), and one Zn(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Zr(1), one Nb(2), and one Zn(1) atom.