ZnP2(HO4)2 crystallizes in the orthorhombic Fdd2 space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form ZnO4 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. Both Zn(1)-O(1) bond lengths are 1.96 Å. Both Zn(1)-O(2) bond lengths are 1.91 Å. In the second Zn site, Zn(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. Both Zn(2)-O(3) bond lengths are 1.94 Å. Both Zn(2)-O(4) bond lengths are 1.93 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra and  a cornercorner with one Zn(2)O4 tetrahedra. The P(1)-O(1) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.52 Å. The P(1)-O(5) bond length is 1.54 Å. The P(1)-O(6) bond length is 1.56 Å. In the second P site, P(2) is bonded to one O(2), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra and  a cornercorner with one Zn(2)O4 tetrahedra. The P(2)-O(2) bond length is 1.52 Å. The P(2)-O(4) bond length is 1.50 Å. The P(2)-O(7) bond length is 1.54 Å. The P(2)-O(8) bond length is 1.59 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(6) atom. The H(1)-O(6) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(8) atom. The H(2)-O(8) bond length is 0.82 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zn(2) and one P(2) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one P(1) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one P(1) and one H(1) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one P(2) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one P(2) and one H(2) atom. Linkers: 32 [O]P([O])(=O)O. Metal clusters: 16 [Zn]. The MOF has largest included sphere 5.85 A, density 1.38 g/cm3, surface area 3356.03 m2/g, accessible volume 0.43 cm3/g