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

Single crystalline $^{2}_{\infty}\rm [Tb(Tz\ast)_{3}]$ , (Tz*) – = 1,2,3‐triazolate anion, C 2 H 2 N 3 – , was obtained by the reaction of terbium metal with the amine 1 H ‐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 AlCl 3 structure with the triazolate ligands establishing the package. (Tz*) – thus function as μ‐η 1 :η 2 /μ‐η 2 :η 1 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 N 2 .