K3VSO3 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one S(1), two equivalent O(2), and three equivalent O(1) atoms. In the third K site, K(3) is bonded in a 3-coordinate geometry to three equivalent S(1), one O(1), and two equivalent O(2) atoms. V(1) is bonded in a distorted tetrahedral geometry to one S(1), one O(1), and two equivalent O(2) atoms. S(1) is bonded in a 8-coordinate geometry to one K(2), three equivalent K(1), three equivalent K(3), and one V(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one K(3), three equivalent K(2), and one V(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), one K(3), two equivalent K(1), and one V(1) atom.
K3VSO3 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to three equivalent S(1) and four equivalent O(2) atoms. There is one shorter (3.26 Å) and two longer (3.50 Å) K(1)-S(1) bond lengths. There are two shorter (2.77 Å) and two longer (2.94 Å) K(1)-O(2) bond lengths. In the second K site, K(2) is bonded in a 6-coordinate geometry to one S(1), two equivalent O(2), and three equivalent O(1) atoms. The K(2)-S(1) bond length is 3.28 Å. Both K(2)-O(2) bond lengths are 2.90 Å. There is one shorter (2.93 Å) and two longer (3.03 Å) K(2)-O(1) bond lengths. In the third K site, K(3) is bonded in a 3-coordinate geometry to three equivalent S(1), one O(1), and two equivalent O(2) atoms. There is one shorter (3.25 Å) and two longer (3.51 Å) K(3)-S(1) bond lengths. The K(3)-O(1) bond length is 2.64 Å. Both K(3)-O(2) bond lengths are 2.68 Å. V(1) is bonded in a distorted tetrahedral geometry to one S(1), one O(1), and two equivalent O(2) atoms. The V(1)-S(1) bond length is 2.26 Å. The V(1)-O(1) bond length is 1.72 Å. Both V(1)-O(2) bond lengths are 1.72 Å. S(1) is bonded in a 8-coordinate geometry to one K(2), three equivalent K(1), three equivalent K(3), and one V(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one K(3), three equivalent K(2), and one V(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(2), one K(3), two equivalent K(1), and one V(1) atom.