KVS2O9 crystallizes in the orthorhombic P2_12_12_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(3), one O(8), one O(9), two equivalent O(1), and three equivalent O(6) atoms. V(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(8), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one V(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to three equivalent K(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one V(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one K(1), one V(1), and one S(2) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one K(1), one V(1), and one S(2) atom.
KVS2O9 crystallizes in the orthorhombic P2_12_12_1 space group. K(1) is bonded in a 8-coordinate geometry to one O(3), one O(8), one O(9), two equivalent O(1), and three equivalent O(6) atoms. The K(1)-O(3) bond length is 2.67 Å. The K(1)-O(8) bond length is 3.08 Å. The K(1)-O(9) bond length is 3.03 Å. Both K(1)-O(1) bond lengths are 2.87 Å. There are a spread of K(1)-O(6) bond distances ranging from 3.03-3.22 Å. V(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(7), one O(8), and one O(9) atom. The V(1)-O(2) bond length is 2.43 Å. The V(1)-O(4) bond length is 1.90 Å. The V(1)-O(5) bond length is 1.92 Å. The V(1)-O(7) bond length is 1.59 Å. The V(1)-O(8) bond length is 1.97 Å. The V(1)-O(9) bond length is 1.97 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. The S(1)-O(1) bond length is 1.45 Å. The S(1)-O(3) bond length is 1.44 Å. The S(1)-O(4) bond length is 1.54 Å. The S(1)-O(5) bond length is 1.53 Å. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(8), and one O(9) atom. The S(2)-O(2) bond length is 1.46 Å. The S(2)-O(6) bond length is 1.45 Å. The S(2)-O(8) bond length is 1.53 Å. The S(2)-O(9) bond length is 1.54 Å. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one V(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one K(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one V(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one S(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to three equivalent K(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one V(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one K(1), one V(1), and one S(2) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one K(1), one V(1), and one S(2) atom.