Zn2P2HO8 crystallizes in the triclinic P-1 space group. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The Zn(1)-O(1) bond length is 1.89 Å. The Zn(1)-O(2) bond length is 1.97 Å. The Zn(1)-O(3) bond length is 1.92 Å. In the second Zn site, Zn(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. The Zn(2)-O(4) bond length is 1.93 Å. The Zn(2)-O(5) bond length is 1.95 Å. The Zn(2)-O(6) bond length is 1.94 Å. In the third Zn site, Zn(3) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form ZnO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Zn(3)-O(10) bond length is 1.94 Å. The Zn(3)-O(7) bond length is 1.95 Å. The Zn(3)-O(8) bond length is 1.92 Å. The Zn(3)-O(9) bond length is 1.95 Å. In the fourth Zn site, Zn(4) is bonded to one O(11), one O(12), one O(13), and one O(14) atom to form ZnO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Zn(4)-O(11) bond length is 1.97 Å. The Zn(4)-O(12) bond length is 1.94 Å. The Zn(4)-O(13) bond length is 1.91 Å. The Zn(4)-O(14) bond length is 1.92 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), one O(13), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra and  a cornercorner with one Zn(4)O4 tetrahedra. The P(1)-O(1) bond length is 1.50 Å. The P(1)-O(10) bond length is 1.53 Å. The P(1)-O(13) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(14), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra and  a cornercorner with one Zn(4)O4 tetrahedra. The P(2)-O(14) bond length is 1.52 Å. The P(2)-O(5) bond length is 1.55 Å. The P(2)-O(6) bond length is 1.55 Å. The P(2)-O(8) bond length is 1.53 Å. In the third P site, P(3) is bonded to one O(16), one O(4), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Zn(3)O4 tetrahedra. The P(3)-O(16) bond length is 1.58 Å. The P(3)-O(4) bond length is 1.52 Å. The P(3)-O(7) bond length is 1.50 Å. The P(3)-O(9) bond length is 1.53 Å. In the fourth P site, P(4) is bonded to one O(11), one O(12), one O(15), and one O(2) atom to form PO4 tetrahedra that share corners with two equivalent Zn(4)O4 tetrahedra. The P(4)-O(11) bond length is 1.52 Å. The P(4)-O(12) bond length is 1.50 Å. The P(4)-O(15) bond length is 1.56 Å. The P(4)-O(2) bond length is 1.53 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted single-bond geometry to one O(15) and one O(3) atom. The H(1)-O(15) bond length is 1.01 Å. The H(1)-O(3) bond length is 1.66 Å. In the second H site, H(2) is bonded in a distorted linear geometry to one O(16) and one O(5) atom. The H(2)-O(16) bond length is 1.01 Å. The H(2)-O(5) bond length is 1.65 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear 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(4) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Zn(1), one P(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Zn(2), one P(2), and one H(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Zn(3) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Zn(3) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Zn(3) and one P(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Zn(4) and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 150 degrees geometry to one Zn(4) and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Zn(4) and one P(1) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Zn(4) and one P(2) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one P(4) and one H(1) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one P(3) and one H(2) atom. Linkers: 4 [O]P([O])(=O)O ,4 [O]P([O])([O])=O. Metal clusters: 8 [Zn]. The MOF has largest included sphere 5.03 A, density 1.96 g/cm3, surface area 2649.71 m2/g, accessible volume 0.27 cm3/g