VOHPO4 crystallizes in the triclinic P-1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to two equivalent H(1), two equivalent O(1), and two equivalent O(2) atoms. In the second V site, V(2) is bonded in a hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. P(1) is bonded in a distorted L-shaped geometry to one O(2), one O(3), one O(4), and one O(5) atom. H(1) is bonded in a single-bond geometry to one V(1) and one O(1) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one V(1), one V(2), one H(1), and one O(4) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one V(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(2), one P(1), and one O(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(2) and one P(1) atom.
VOHPO4 crystallizes in the triclinic P-1 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded in a 6-coordinate geometry to two equivalent H(1), two equivalent O(1), and two equivalent O(2) atoms. Both V(1)-H(1) bond lengths are 1.85 Å. Both V(1)-O(1) bond lengths are 1.67 Å. Both V(1)-O(2) bond lengths are 2.07 Å. In the second V site, V(2) is bonded in a hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Both V(2)-O(1) bond lengths are 2.31 Å. Both V(2)-O(3) bond lengths are 2.44 Å. Both V(2)-O(4) bond lengths are 2.41 Å. Both V(2)-O(5) bond lengths are 2.19 Å. P(1) is bonded in a distorted L-shaped geometry to one O(2), one O(3), one O(4), and one O(5) atom. The P(1)-O(2) bond length is 1.28 Å. The P(1)-O(3) bond length is 2.07 Å. The P(1)-O(4) bond length is 2.34 Å. The P(1)-O(5) bond length is 1.23 Å. H(1) is bonded in a single-bond geometry to one V(1) and one O(1) atom. The H(1)-O(1) bond length is 1.30 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one V(1), one V(2), one H(1), and one O(4) atom. The O(1)-O(4) bond length is 1.68 Å. In the second O site, O(2) is bonded in a distorted single-bond geometry to one V(1) and one P(1) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one V(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(2), one P(1), and one O(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one V(2) and one P(1) atom.