(2)(infinity)[Tb(Tz*)(3)], A Homoleptic 2-Dimensional Framework from a Solvent Free Synthesis of Terbium Metal with 1H-1,2,3-Triazole

Single crystalline (2)(infinity)[Tb(Tz*)(3)], (Tz*)- = 1,2,3-triazolate anion, C2H2N3-, was obtained by the reaction of terbium metal with the amine 1H-1,2,3-triazole. As no additional solvent was used, the formation of a homoleptic framework without additional co-ligands is accessible. Furthermore molecular hydrogen is produced. (2)(infinity)[Tb(Tz*)(3)] is a 2-dimensional framework with a (6,6) topology including (Tz*)- double bridges. The structure can be de- duced from a basic structure type as it adopts the AlCl3 structure with the triazolate ligands establishing the package. (Tz*)(-) thus function as mu-eta(1):eta(2)/mu-eta(2):eta(1) linkers between trivalent terbium ions that have a C.N. of nine. The framework exhibits an exceptional thermal stability up to 380 degrees C considering the three neighbouring nitrogen atoms of the triazolate ligands. At this point the framework decomposes in one single exothermic step under release of N-2.