ZnPO4 crystallizes in the monoclinic C2/c space group. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form ZnO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Zn(1)-O(1) bond length is 1.94 Å. The Zn(1)-O(2) bond length is 1.93 Å. The Zn(1)-O(3) bond length is 1.94 Å. The Zn(1)-O(4) bond length is 1.92 Å. In the second Zn site, Zn(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form ZnO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Zn(2)-O(5) bond length is 1.92 Å. The Zn(2)-O(6) bond length is 1.91 Å. The Zn(2)-O(7) bond length is 1.91 Å. The Zn(2)-O(8) bond length is 1.94 Å. In the third Zn site, Zn(3) is bonded to two equivalent O(10) and two equivalent O(9) 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(3)-O(10) bond lengths are 1.94 Å. Both Zn(3)-O(9) bond lengths are 1.93 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(3), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The P(1)-O(10) bond length is 1.52 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(6) bond length is 1.52 Å. The P(1)-O(8) bond length is 1.51 Å. In the second P site, P(2) is bonded to one O(1), one O(4), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(2)O4 tetrahedra,  a cornercorner with one Zn(3)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. The P(2)-O(1) bond length is 1.52 Å. The P(2)-O(4) bond length is 1.51 Å. The P(2)-O(7) bond length is 1.51 Å. The P(2)-O(9) bond length is 1.52 Å. In the third P site, P(3) is bonded to two equivalent O(2) and two equivalent O(5) atoms to form PO4 tetrahedra that share corners with two equivalent Zn(1)O4 tetrahedra and corners with two equivalent Zn(2)O4 tetrahedra. Both P(3)-O(2) bond lengths are 1.50 Å. Both P(3)-O(5) bond lengths are 1.51 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one P(3) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Zn(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Zn(2) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Zn(2) and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Zn(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Zn(3) and one P(2) 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. Linkers: 20 [O]P([O])([O])=O. Metal clusters: 20 [Zn]. The MOF has largest included sphere 4.40 A, density 1.97 g/cm3, surface area 2650.10 m2/g, accessible volume 0.24 cm3/g