TlTlH2(C3O2)2(CH)2 crystallizes in the monoclinic P2_1 space group. The structure is zero-dimensional and consists of four 02329_fluka molecules, two 7440-28-0 atoms, and two TlH2(C3O2)2 clusters. In each TlH2(C3O2)2 cluster, Tl(2) is bonded in a distorted single-bond geometry to one O(3) atom. The Tl(2)-O(3) bond length is 2.70 Å. There are six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one C(2), one C(6), and one C(7) atom. The C(1)-C(2) bond length is 1.41 Å. The C(1)-C(6) bond length is 1.40 Å. The C(1)-C(7) bond length is 1.51 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one C(1), one C(3), and one C(8) atom. The C(2)-C(3) bond length is 1.40 Å. The C(2)-C(8) bond length is 1.51 Å. In the third C site, C(3) is bonded in a distorted single-bond geometry to one C(2) and one H(1) atom. The C(3)-H(1) bond length is 1.09 Å. In the fourth C site, C(6) is bonded in a distorted single-bond geometry to one C(1) and one H(4) atom. The C(6)-H(4) bond length is 1.09 Å. In the fifth C site, C(7) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(7)-O(1) bond length is 1.27 Å. The C(7)-O(2) bond length is 1.27 Å. In the sixth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(2), one O(3), and one O(4) atom. The C(8)-O(3) bond length is 1.28 Å. The C(8)-O(4) bond length is 1.27 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(4) is bonded in a single-bond geometry to one C(6) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a single-bond geometry to one Tl(2) and one C(8) atom. In the second O site, O(4) is bonded in a single-bond geometry to one C(8) atom. In the third O site, O(1) is bonded in a single-bond geometry to one C(7) atom. In the fourth O site, O(2) is bonded in a single-bond geometry to one C(7) atom. Linkers: 2 [O]C(=O)c1ccccc1C([O])=O. Metal clusters: 4 [Tl]. The MOF has largest included sphere 2.23 A, density 3.86 g/cm3, surface area 1585.68 m2/g, accessible volume 0.06 cm3/g