CdC6PNH8O5 crystallizes in the monoclinic C2/c space group. Cd(1) is bonded to one N(1), one O(1), one O(2), one O(3), and one O(4) atom to form distorted CdNO4 trigonal bipyramids that share corners with three equivalent P(1)CO3 tetrahedra. The Cd(1)-N(1) bond length is 2.31 Å. The Cd(1)-O(1) bond length is 2.34 Å. The Cd(1)-O(2) bond length is 2.33 Å. The Cd(1)-O(3) bond length is 2.24 Å. The Cd(1)-O(4) bond length is 2.22 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(2), one N(1), and one H(3) atom. The C(1)-C(2) bond length is 1.39 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(3) bond length is 1.09 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1), one C(3), and one H(4) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-H(4) bond length is 1.09 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one C(2), one C(4), and one C(6) atom. The C(3)-C(4) bond length is 1.40 Å. The C(3)-C(6) bond length is 1.50 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(5) atom. The C(4)-C(5) bond length is 1.39 Å. The C(4)-H(5) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted trigonal planar geometry to one C(4), one N(1), and one H(6) atom. The C(5)-N(1) bond length is 1.35 Å. The C(5)-H(6) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted water-like geometry to one C(3), one P(1), one H(7), and one O(5) atom. The C(6)-P(1) bond length is 1.86 Å. The C(6)-H(7) bond length is 1.10 Å. The C(6)-O(5) bond length is 1.42 Å. P(1) is bonded to one C(6), one O(1), one O(3), and one O(4) atom to form PCO3 tetrahedra that share corners with three equivalent Cd(1)NO4 trigonal bipyramids. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) bond length is 1.52 Å. N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(1), and one C(5) atom. There are eight inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(2) and one O(5) atom. The H(1)-O(2) bond length is 1.00 Å. The H(1)-O(5) bond length is 1.65 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(2) and one O(3) atom. The H(2)-O(2) bond length is 1.00 Å. The H(2)-O(3) bond length is 1.65 Å. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(4) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(5) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(6) atom. In the eighth H site, H(8) is bonded in a distorted single-bond geometry to one O(1) and one O(5) atom. The H(8)-O(1) bond length is 1.65 Å. The H(8)-O(5) bond length is 1.01 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one P(1), and one H(8) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Cd(1), one H(1), and one H(2) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Cd(1), one P(1), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one C(6), one H(1), and one H(8) atom. Linkers: 2 [O]P([O])(=O)[C@@H](O)c1ccncc1 ,2 [O]P([O])(=O)[C@H](O)c1ccncc1. Metal clusters: 4 [Cd]. The MOF has largest included sphere 1.82 A, density 2.47 g/cm3, surface area 2904.94 m2/g, accessible volume 0.05 cm3/g