KNbWO6 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(4) atoms. Nb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-43°. W(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-43°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent W(1) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Nb(1) and one W(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one Nb(1), and one W(1) atom.
KNbWO6 crystallizes in the orthorhombic Ima2 space group. K(1) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(4) atoms. The K(1)-O(1) bond length is 3.01 Å. Both K(1)-O(4) bond lengths are 2.94 Å. Nb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-43°. Both Nb(1)-O(1) bond lengths are 1.99 Å. Both Nb(1)-O(3) bond lengths are 1.95 Å. Both Nb(1)-O(4) bond lengths are 2.09 Å. W(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-43°. There is one shorter (1.91 Å) and one longer (2.02 Å) W(1)-O(2) bond length. Both W(1)-O(3) bond lengths are 1.98 Å. Both W(1)-O(4) bond lengths are 1.89 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one K(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to two equivalent W(1) atoms. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Nb(1) and one W(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1), one Nb(1), and one W(1) atom.