Be2P2HO8 crystallizes in the monoclinic C2/c space group. There are two inequivalent Be sites. In the first Be site, Be(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form BeO4 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. The Be(1)-O(1) bond length is 1.61 Å. The Be(1)-O(2) bond length is 1.63 Å. The Be(1)-O(3) bond length is 1.65 Å. The Be(1)-O(4) bond length is 1.61 Å. In the second Be site, Be(2) is bonded in a trigonal non-coplanar geometry to one O(5), one O(6), and one O(7) atom. The Be(2)-O(5) bond length is 1.61 Å. The Be(2)-O(6) bond length is 1.63 Å. The Be(2)-O(7) bond length is 1.59 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(5), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(5) bond length is 1.52 Å. The P(1)-O(8) bond length is 1.57 Å. In the second P site, P(2) is bonded to one O(1), one O(4), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra. The P(2)-O(1) bond length is 1.52 Å. The P(2)-O(4) bond length is 1.52 Å. The P(2)-O(6) bond length is 1.55 Å. The P(2)-O(7) bond length is 1.54 Å. H(1) is bonded in a single-bond geometry to one O(8) atom. The H(1)-O(8) bond length is 0.75 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Be(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Be(1) and one P(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Be(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Be(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Be(2) and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Be(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Be(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(1) and one H(1) atom. Linkers: 8 [O]P([O])([O])=O ,8 [O]P([O])(=O)O. Metal clusters: 16 [Be]. The MOF has largest included sphere 5.22 A, density 1.49 g/cm3, surface area 3289.05 m2/g, accessible volume 0.29 cm3/g