Quinone-Annulated N-Heterocyclic Carbene-Transition-Metal Complexes: Observation of pi-Backbonding Using FT-IR Spectroscopy and Cyclic Voltammetry

摘要

Since Arduengo's seminal isolation of 1,3-diadamantyl-imida-zolylidene,N-heterocyclic carbenes (NHCs) have found extraordinary utility for modulating the activities of transition metals and as versatile catalysts for promoting organic reactions.We have recently launched a program that utilizes NHCs as building blocks for organometallic polymers,with an emphasis on tuning the electronic interactions between NHCs and their ligated transition metals.