CoPO4 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CoO4 trigonal pyramids that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Co(1)O4 trigonal pyramid. Both Co(1)-O(2) bond lengths are 1.94 Å. There is one shorter (2.01 Å) and one longer (2.14 Å) Co(1)-O(3) bond length. In the second Co site, Co(2) is bonded to one O(5), one O(6), and two equivalent O(1) atoms to form CoO4 trigonal pyramids that share corners with two equivalent P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. The Co(2)-O(5) bond length is 1.95 Å. The Co(2)-O(6) bond length is 2.03 Å. Both Co(2)-O(1) bond lengths are 1.96 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), and two equivalent O(1) atoms to form PO4 tetrahedra that share corners with two equivalent Co(1)O4 trigonal pyramids and corners with two equivalent Co(2)O4 trigonal pyramids. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.56 Å. Both P(1)-O(1) bond lengths are 1.53 Å. In the second P site, P(2) is bonded to one O(5), one O(6), and two equivalent O(2) atoms to form PO4 tetrahedra that share corners with two equivalent Co(1)O4 trigonal pyramids and corners with two equivalent Co(2)O4 trigonal pyramids. The P(2)-O(5) bond length is 1.54 Å. The P(2)-O(6) bond length is 1.51 Å. Both P(2)-O(2) bond lengths are 1.54 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Co(2) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(2) atom. In the sixth O site, O(6) is bonded in a linear geometry to one Co(2) and one P(2) atom. Linkers: 16 [O]P([O])([O])=O. Metal clusters: 16 [Co]. The MOF has largest included sphere 3.85 A, density 2.06 g/cm3, surface area 2187.88 m2/g, accessible volume 0.18 cm3/g