CdC9H7(NO)3 crystallizes in the tetragonal P4_2/n space group. Cd(1) is bonded to one N(3), one O(1), one O(2), and three equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing CdNO5 octahedra. The corner-sharing octahedral tilt angles range from 67-68°. The Cd(1)-N(3) bond length is 2.38 Å. The Cd(1)-O(1) bond length is 2.61 Å. The Cd(1)-O(2) bond length is 2.36 Å. There are a spread of Cd(1)-O(3) bond distances ranging from 2.26-2.31 Å. There are nine inequivalent C sites. In the first C site, C(9) is bonded in a trigonal planar geometry to one N(1), one N(3), and one H(7) atom. The C(9)-N(1) bond length is 1.36 Å. The C(9)-N(3) bond length is 1.33 Å. The C(9)-H(7) bond length is 1.09 Å. In the second C site, C(1) is bonded in a bent 120 degrees geometry to one C(3), one O(1), and one O(2) atom. The C(1)-C(3) bond length is 1.50 Å. The C(1)-O(1) bond length is 1.27 Å. The C(1)-O(2) bond length is 1.28 Å. In the third C site, C(2) is bonded in a distorted single-bond geometry to one C(3), one C(7), and one H(2) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(7) bond length is 1.39 Å. The C(2)-H(2) bond length is 1.09 Å. In the fourth C site, C(3) is bonded in a trigonal planar geometry to one C(1), one C(2), and one C(4) atom. The C(3)-C(4) bond length is 1.40 Å. In the fifth C site, C(4) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(4)-H(3) bond length is 1.09 Å. In the sixth C site, C(5) is bonded in a distorted single-bond geometry to one C(6) and one H(4) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(4) bond length is 1.09 Å. In the seventh C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one N(1) atom. The C(6)-C(7) bond length is 1.40 Å. The C(6)-N(1) bond length is 1.42 Å. In the eighth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(2), one C(6), and one H(5) atom. The C(7)-H(5) bond length is 1.09 Å. In the ninth C site, C(8) is bonded in a trigonal planar geometry to one N(2), one N(3), and one H(6) atom. The C(8)-N(2) bond length is 1.32 Å. The C(8)-N(3) bond length is 1.37 Å. The C(8)-H(6) bond length is 1.09 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a 2-coordinate geometry to one C(6) and one C(9) atom. In the second N site, N(2) is bonded in a distorted single-bond geometry to one C(8) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Cd(1), one C(8), and one C(9) atom. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(9) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cd(1) and one C(1) atom. In the second O site, O(2) is bonded in a distorted water-like geometry to one Cd(1) and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to three equivalent Cd(1) and one H(1) atom. Linkers: 5 [O]C(=O)c1ccc(-n2cncn2)cc1 ,3 [O]C(=O)c1ccc(N2[CH]N=C[N]2)cc1. Metal clusters: 8 [Cd]. The MOF has largest included sphere 7.47 A, density 1.66 g/cm3, surface area 3503.89 m2/g, accessible volume 0.26 cm3/g