TlC3NHO3(CH)3 is Indium-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of twelve 02329_fluka molecules and two TlC3NHO3 clusters. In each TlC3NHO3 cluster, Tl(1) is bonded in a 2-coordinate geometry to two equivalent O(1) atoms. There is one shorter (2.85 Å) and one longer (2.87 Å) Tl(1)-O(1) bond length. There are three inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(3) and one O(1) atom. The C(1)-C(3) bond length is 1.45 Å. The C(1)-O(1) bond length is 1.29 Å. In the second C site, C(3) is bonded in a distorted trigonal planar geometry to one C(1); one C(5,6); and one N(1,2) atom. The C(3)-C(5,6) bond length is 1.41 Å. The C(3)-N(1,2) bond length is 1.42 Å. In the third C site, C(5,6) is bonded in a distorted single-bond geometry to one C(3) and one H(1) atom. The C(5,6)-H(1) bond length is 1.09 Å. N(1,2) is bonded in a trigonal planar geometry to one C(3), one O(3), and one O(5) atom. The N(1,2)-O(3) bond length is 1.27 Å. The N(1,2)-O(5) bond length is 1.26 Å. H(1) is bonded in a single-bond geometry to one C(5,6) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Tl(1) and one C(1) atom. In the second O site, O(3) is bonded in a single-bond geometry to one N(1,2) atom. In the third O site, O(5) is bonded in a single-bond geometry to one N(1,2) atom. Linkers: 4 [O]c1ccccc1[N+](=O)[O-]. Metal clusters: 4 [Tl]. The MOF has largest included sphere 1.61 A, density 3.13 g/cm3, surface area 2311.32 m2/g, accessible volume 0.07 cm3/g