CoNb2O6 is Rutile-derived structured and crystallizes in the tetragonal P4_2/mnm space group. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-51°. Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with eight equivalent Nb(1)O6 octahedra and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nb(1) and one Co(1) atom. In the second O site, O(1) is bonded in a trigonal planar geometry to two equivalent Nb(1) and one Co(1) atom.
CoNb2O6 is Rutile-derived structured and crystallizes in the tetragonal P4_2/mnm space group. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NbO6 octahedra that share corners with four equivalent Nb(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra,  an edgeedge with one Nb(1)O6 octahedra, and  an edgeedge with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-51°. Both Nb(1)-O(1) bond lengths are 2.03 Å. There are two shorter (2.00 Å) and two longer (2.02 Å) Nb(1)-O(2) bond lengths. Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with eight equivalent Nb(1)O6 octahedra and edges with two equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. Both Co(1)-O(1) bond lengths are 2.12 Å. All Co(1)-O(2) bond lengths are 2.13 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Nb(1) and one Co(1) atom. In the second O site, O(1) is bonded in a trigonal planar geometry to two equivalent Nb(1) and one Co(1) atom.