CuC4N5H4O3C4H3 is Indium-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four isobutylene molecules and two CuC4N5H4O3 clusters. In each CuC4N5H4O3 cluster, Cu(1) is bonded in a square pyramidal geometry to one N(1), one N(2), one N(5), one O(1), and one O(3) atom. The Cu(1)-N(1) bond length is 2.00 Å. The Cu(1)-N(2) bond length is 1.99 Å. The Cu(1)-N(5) bond length is 1.98 Å. The Cu(1)-O(1) bond length is 2.02 Å. The Cu(1)-O(3) bond length is 2.26 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(1), and one O(2) atom. The C(1)-C(2) bond length is 1.49 Å. The C(1)-O(1) bond length is 1.29 Å. The C(1)-O(2) bond length is 1.25 Å. In the second C site, C(2) is bonded in a distorted water-like geometry to one C(1), one N(1), and one N(4) atom. The C(2)-N(1) bond length is 1.34 Å. The C(2)-N(4) bond length is 1.34 Å. In the third C site, C(4) is bonded in a distorted bent 120 degrees geometry to one N(5) and one H(2) atom. The C(4)-N(5) bond length is 1.35 Å. The C(4)-H(2) bond length is 1.09 Å. In the fourth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one N(5) and one H(5) atom. The C(8)-N(5) bond length is 1.35 Å. The C(8)-H(5) bond length is 1.09 Å. There are five inequivalent N sites. In the first N site, N(1) is bonded in a 3-coordinate geometry to one Cu(1), one C(2), and one N(2) atom. The N(1)-N(2) bond length is 1.33 Å. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one N(1), and one N(3) atom. The N(2)-N(3) bond length is 1.33 Å. In the third N site, N(3) is bonded in a distorted water-like geometry to one N(2) and one N(4) atom. The N(3)-N(4) bond length is 1.34 Å. In the fourth N site, N(4) is bonded in a distorted water-like geometry to one C(2) and one N(3) atom. In the fifth N site, N(5) is bonded in a trigonal planar geometry to one Cu(1), one C(4), and one C(8) atom. There are four inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the second H site, H(5) is bonded in a single-bond geometry to one C(8) atom. In the third H site, H(6) is bonded in a single-bond geometry to one O(3) atom. The H(6)-O(3) bond length is 0.99 Å. In the fourth H site, H(7) is bonded in a single-bond geometry to one O(3) atom. The H(7)-O(3) bond length is 0.99 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded in a distorted water-like geometry to one Cu(1), one H(6), and one H(7) atom. In the second O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to one C(1) atom. Linkers: 2 C(=C/c1ccncc1)\c1ccncc1 ,3 [O]C(=O)C1=NN=N[N]1 ,1 [O]C(=O)C1=N[N]N=N1. Metal clusters: 4 [Cu]. The MOF has largest included sphere 1.86 A, density 1.96 g/cm3, surface area 3725.09 m2/g, accessible volume 0.08 cm3/g