ZnPO4 crystallizes in the monoclinic P2_1 space group. There are four 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(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Zn(1)-O(1) bond length is 1.92 Å. The Zn(1)-O(2) bond length is 1.93 Å. The Zn(1)-O(3) bond length is 2.00 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(4)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Zn(2)-O(5) bond length is 1.95 Å. The Zn(2)-O(6) bond length is 1.92 Å. The Zn(2)-O(7) bond length is 1.96 Å. The Zn(2)-O(8) bond length is 1.91 Å. In the third Zn site, Zn(3) is bonded to one O(10), one O(11), one O(12), and one O(9) 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(4)O4 tetrahedra. The Zn(3)-O(10) bond length is 1.94 Å. The Zn(3)-O(11) bond length is 1.95 Å. The Zn(3)-O(12) bond length is 1.92 Å. The Zn(3)-O(9) bond length is 1.92 Å. In the fourth Zn site, Zn(4) is bonded to one O(13), one O(14), one O(15), and one O(16) 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(4)-O(13) bond length is 1.93 Å. The Zn(4)-O(14) bond length is 1.96 Å. The Zn(4)-O(15) bond length is 1.94 Å. The Zn(4)-O(16) bond length is 1.95 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(12), one O(16), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra,  a cornercorner with one Zn(4)O4 tetrahedra, and corners with two equivalent Zn(1)O4 tetrahedra. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(12) bond length is 1.53 Å. The P(1)-O(16) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.52 Å. In the second P site, P(2) is bonded to one O(13), one O(14), one O(2), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra, and corners with two equivalent Zn(4)O4 tetrahedra. The P(2)-O(13) bond length is 1.53 Å. The P(2)-O(14) bond length is 1.53 Å. The P(2)-O(2) bond length is 1.53 Å. The P(2)-O(8) bond length is 1.53 Å. In the third P site, P(3) is bonded to one O(11), one O(15), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(3)O4 tetrahedra,  a cornercorner with one Zn(4)O4 tetrahedra, and corners with two equivalent Zn(2)O4 tetrahedra. The P(3)-O(11) bond length is 1.53 Å. The P(3)-O(15) bond length is 1.55 Å. The P(3)-O(6) bond length is 1.52 Å. The P(3)-O(7) bond length is 1.53 Å. In the fourth P site, P(4) is bonded to one O(10), one O(3), one O(5), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Zn(1)O4 tetrahedra,  a cornercorner with one Zn(2)O4 tetrahedra, and corners with two equivalent Zn(3)O4 tetrahedra. The P(4)-O(10) bond length is 1.52 Å. The P(4)-O(3) bond length is 1.55 Å. The P(4)-O(5) bond length is 1.53 Å. The P(4)-O(9) bond length is 1.53 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 150 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(1) and one P(4) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Zn(2) and one P(4) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Zn(2) and one P(3) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one Zn(2) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Zn(2) and one P(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Zn(3) and one P(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one Zn(3) and one P(4) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Zn(3) and one P(3) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Zn(3) and one P(1) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Zn(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Zn(4) and one P(2) atom. In the fifteenth O site, O(15) is bonded in a distorted bent 150 degrees geometry to one Zn(4) and one P(3) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Zn(4) and one P(1) atom. Linkers: 8 [O]P([O])([O])=O. Metal clusters: 8 [Zn]. The MOF has largest included sphere 4.70 A, density 2.01 g/cm3, surface area 2662.45 m2/g, accessible volume 0.21 cm3/g