TiNbSbO6 crystallizes in the triclinic P-1 space group. Ti(1) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted TiO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and  an edgeedge with one Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-54°. Nb(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and  an edgeedge with one Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-54°. Sb(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ti(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Nb(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ti(1) and two equivalent Nb(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ti(1) and one Nb(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Ti(1) and one Nb(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ti(1) and one Nb(1) atom.
TiNbSbO6 crystallizes in the triclinic P-1 space group. Ti(1) is bonded to one O(1), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted TiO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and  an edgeedge with one Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-54°. The Ti(1)-O(1) bond length is 2.01 Å. The Ti(1)-O(3) bond length is 1.95 Å. The Ti(1)-O(5) bond length is 1.78 Å. The Ti(1)-O(6) bond length is 2.04 Å. There is one shorter (2.00 Å) and one longer (2.26 Å) Ti(1)-O(4) bond length. Nb(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted NbO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and  an edgeedge with one Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 37-54°. The Nb(1)-O(2) bond length is 2.05 Å. The Nb(1)-O(4) bond length is 1.96 Å. The Nb(1)-O(5) bond length is 2.07 Å. The Nb(1)-O(6) bond length is 1.84 Å. There is one shorter (2.01 Å) and one longer (2.30 Å) Nb(1)-O(3) bond length. Sb(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. There is one shorter (2.03 Å) and one longer (2.22 Å) Sb(1)-O(1) bond length. There is one shorter (2.05 Å) and one longer (2.24 Å) Sb(1)-O(2) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ti(1) and two equivalent Sb(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Nb(1) and two equivalent Sb(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ti(1) and two equivalent Nb(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ti(1) and one Nb(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Ti(1) and one Nb(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Ti(1) and one Nb(1) atom.