CdC7P2H12(NO5)2 crystallizes in the triclinic P-1 space group. Cd(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(9), and two equivalent O(5) atoms to form distorted CdO7 pentagonal bipyramids that share  a cornercorner with one P(2)CO3 tetrahedra, corners with two equivalent P(1)CO3 tetrahedra, and  an edgeedge with one Cd(1)O7 pentagonal bipyramid. The Cd(1)-O(1) bond length is 2.35 Å. The Cd(1)-O(2) bond length is 2.58 Å. The Cd(1)-O(3) bond length is 2.54 Å. The Cd(1)-O(4) bond length is 2.39 Å. The Cd(1)-O(9) bond length is 2.19 Å. There is one shorter (2.29 Å) and one longer (2.45 Å) Cd(1)-O(5) bond length. There are seven 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(9) atom. The C(1)-C(2) bond length is 1.38 Å. The C(1)-N(1) bond length is 1.35 Å. The C(1)-H(9) 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) and one H(10) atom. The C(2)-H(10) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(11) atom. The C(3)-C(4) bond length is 1.39 Å. The C(3)-H(11) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(6) atom. The C(4)-C(5) bond length is 1.43 Å. The C(4)-C(6) bond length is 1.49 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 N(2) atom. The C(5)-N(1) bond length is 1.36 Å. The C(5)-N(2) bond length is 1.34 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(4), one O(2), and one O(4) atom. The C(6)-O(2) bond length is 1.27 Å. The C(6)-O(4) bond length is 1.29 Å. In the seventh C site, C(7) is bonded in a distorted tetrahedral geometry to one P(1), one P(2), one N(2), and one H(12) atom. The C(7)-P(1) bond length is 1.85 Å. The C(7)-P(2) bond length is 1.85 Å. The C(7)-N(2) bond length is 1.45 Å. The C(7)-H(12) bond length is 1.10 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one C(7), one O(5), one O(6), and one O(7) atom to form distorted PCO3 tetrahedra that share corners with two equivalent Cd(1)O7 pentagonal bipyramids and  a cornercorner with one P(2)CO3 tetrahedra. The P(1)-O(5) bond length is 1.53 Å. The P(1)-O(6) bond length is 1.58 Å. The P(1)-O(7) bond length is 1.53 Å. In the second P site, P(2) is bonded to one C(7), one O(10), one O(8), and one O(9) atom to form distorted PCO3 tetrahedra that share  a cornercorner with one Cd(1)O7 pentagonal bipyramid and  a cornercorner with one P(1)CO3 tetrahedra. The P(2)-O(10) bond length is 1.51 Å. The P(2)-O(8) bond length is 1.60 Å. The P(2)-O(9) bond length is 1.52 Å. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one C(5), and one H(7) atom. The N(1)-H(7) bond length is 1.08 Å. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(5), one C(7), and one H(8) atom. The N(2)-H(8) bond length is 1.04 Å. There are twelve inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(1) atom. The H(2)-O(1) bond length is 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. The H(3)-O(3) bond length is 1.00 Å. In the fourth H site, H(4) is bonded in a distorted single-bond geometry to one O(3) and one O(4) atom. The H(4)-O(3) bond length is 1.01 Å. The H(4)-O(4) bond length is 1.64 Å. In the fifth H site, H(5) is bonded in a linear geometry to one O(6) and one O(7) atom. The H(5)-O(6) bond length is 1.04 Å. The H(5)-O(7) bond length is 1.49 Å. In the sixth H site, H(6) is bonded in a linear geometry to one O(3) and one O(8) atom. The H(6)-O(3) bond length is 1.46 Å. The H(6)-O(8) bond length is 1.05 Å. In the seventh H site, H(7) is bonded in a linear geometry to one N(1) and one O(10) atom. The H(7)-O(10) bond length is 1.55 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one N(2) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(1) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(2) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(3) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(7) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted water-like geometry to one Cd(1), one H(1), and one H(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Cd(1) and one C(6) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one H(3), one H(4), and one H(6) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cd(1), one C(6), and one H(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Cd(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one H(5) atom. In the seventh O site, O(7) is bonded in a bent 120 degrees geometry to one P(1) and one H(5) atom. In the eighth O site, O(8) is bonded in a water-like geometry to one P(2) and one H(6) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Cd(1) and one P(2) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one P(2) and one H(7) atom. Linkers: 2 [O]C(=O)C1=C(NC(P([O])(=O)O)P([O])(=O)O)N[CH]C=C1. Metal clusters: 1 O.O.O.O.[O]P(O)O[Cd](O[C]=O)OP([O])O.[O]P(O)O[Cd](O[C]=O)OP([O])O. The MOF has largest included sphere 2.24 A, density 2.27 g/cm3, surface area 3100.78 m2/g, accessible volume 0.09 cm3/g