VAs2H4O9 crystallizes in the tetragonal I4cm space group. V(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) atoms. As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. H(1,2) is bonded in a single-bond geometry to one O(2) atom. There are four inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one As(1) and one H(1,2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one As(1) and one H(1,2) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to two equivalent V(1) atoms. In the fourth O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one As(1) atom.
VAs2H4O9 crystallizes in the tetragonal I4cm space group. V(1) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(1) atoms. There is one shorter (1.65 Å) and one longer (2.45 Å) V(1)-O(4) bond length. All V(1)-O(1) bond lengths are 2.05 Å. As(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. The As(1)-O(2) bond length is 1.74 Å. The As(1)-O(3) bond length is 1.74 Å. Both As(1)-O(1) bond lengths are 1.71 Å. H(1,2) is bonded in a single-bond geometry to one O(2) atom. The H(1,2)-O(2) bond length is 0.98 Å. There are four inequivalent O sites. In the first O site, O(2) is bonded in a bent 120 degrees geometry to one As(1) and one H(1,2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one As(1) and one H(1,2) atom. The O(3)-H(1,2) bond length is 0.98 Å. In the third O site, O(4) is bonded in a distorted single-bond geometry to two equivalent V(1) atoms. In the fourth O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one As(1) atom.