$^{2}_{\infty}\rm [Tb(Tz\ast)_{3}]$, A Homoleptic 2‐Dimensional Framework from a Solvent Free Synthesis of Terbium Metal with 1H‐1,2,3‐Triazole

Abstract

AbstractSingle crystalline $^{2}_{\infty}\rm [Tb(Tz\ast)_{3}]$, (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. $^{2}_{\infty}\rm [Tb(Tz\ast)_{3}]$ is a 2‐dimensional framework with a (6,6) topology including (Tz*)– double bridges. The structure can be deduced from a basic structure type as it adopts the AlCl3 structure with the triazolate ligands establishing the package. (Tz*)– thus function as μ‐η1:η2/μ‐η2:η1 linkers between trivalent terbium ions that have a C.N. of nine. The framework exhibits an exceptional thermal stability up to 380 °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 N2.