M₁₂L₂₄ nanospheres as supramolecular templates for the controlled synthesis of Ir-nanoclusters and their use in the chemo-selective hydrogenation of nitro styrene.

ABSTRACT: Controlled preparation of ultrafine metal nanoclusters (<2 nm) is challenging, yet important as the properties of these clusters are inherently linked to their size and local microenvironment. In the present work, we report the utilization of supramolecular pre-organization of organometallic complexes within well-defined M₁₂L₂₄ coordination spheres for the controlled synthesis of ultrafine Ir nanoclusters by reduction with molecular hydrogen. For this purpose, 24 sulfonate functionalized N-heterocyclic carbene (NHC) Ir complexes (Ir-s) were bound within a well-defined M₁₂L₂₄ nanosphere that is equipped with 24 guanidinium binding sites (G-sphere). Reduction of these pre-organized metal complexes by hydrogenation led to the templated formation of

SUBMITTER: Metz LL 

PROVIDER: S-EPMC11575609 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature