TlC8NH8O2 is Indium-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two TlC8NH8O2 clusters. Tl(1) is bonded in a 2-coordinate geometry to two equivalent O(3) atoms. There is one shorter (2.78 Å) and one longer (2.79 Å) Tl(1)-O(3) bond length. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal non-coplanar geometry to one C(5); one H(1,2); one H(3,4); and one H(5,6) atom. The C(1)-C(5) bond length is 1.50 Å. The C(1)-H(1,2) bond length is 1.10 Å. The C(1)-H(3,4) bond length is 1.10 Å. The C(1)-H(5,6) bond length is 1.10 Å. In the second C site, C(3) is bonded in a distorted trigonal planar geometry to one C(5), one C(9), and one N(1) atom. The C(3)-C(5) bond length is 1.43 Å. The C(3)-C(9) bond length is 1.43 Å. The C(3)-N(1) bond length is 1.37 Å. In the third C site, C(5) is bonded in a trigonal planar geometry to one C(1), one C(15), and one C(3) atom. The C(5)-C(15) bond length is 1.39 Å. In the fourth C site, C(7) is bonded in a distorted trigonal planar geometry to one C(13), one C(9), and one H(11) atom. The C(7)-C(13) bond length is 1.39 Å. The C(7)-C(9) bond length is 1.41 Å. The C(7)-H(11) bond length is 1.09 Å. In the fifth C site, C(9) is bonded in a trigonal planar geometry to one C(11), one C(3), and one C(7) atom. The C(9)-C(11) bond length is 1.50 Å. In the sixth C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(9), one O(1), and one O(3) atom. The C(11)-O(1) bond length is 1.29 Å. The C(11)-O(3) bond length is 1.27 Å. In the seventh C site, C(13) is bonded in a distorted trigonal planar geometry to one C(15), one C(7), and one H(13) atom. The C(13)-C(15) bond length is 1.40 Å. The C(13)-H(13) bond length is 1.09 Å. In the eighth C site, C(15) is bonded in a distorted single-bond geometry to one C(13), one C(5), and one H(15) atom. The C(15)-H(15) bond length is 1.09 Å. N(1) is bonded in a distorted trigonal planar geometry to one C(3), one H(7), and one H(9) atom. The N(1)-H(7) bond length is 1.02 Å. The N(1)-H(9) bond length is 1.01 Å. There are eight inequivalent H sites. In the first H site, H(1,2) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(3,4) is bonded in a single-bond geometry to one C(1) atom. In the third H site, H(5,6) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(7) is bonded in a single-bond geometry to one N(1) atom. In the fifth H site, H(9) is bonded in a single-bond geometry to one N(1) atom. In the sixth H site, H(11) is bonded in a single-bond geometry to one C(7) atom. In the seventh H site, H(13) is bonded in a single-bond geometry to one C(13) atom. In the eighth H site, H(15) is bonded in a single-bond geometry to one C(15) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one C(11) atom. In the second O site, O(3) is bonded in a single-bond geometry to two equivalent Tl(1) and one C(11) atom. Linkers: 4 Cc1cccc(C([O])=O)c1N. Metal clusters: 4 [Tl]. The MOF has largest included sphere 2.02 A, density 2.77 g/cm3, surface area 2650.83 m2/g, accessible volume 0.08 cm3/g