Abstract
To construct the framework for a chelating, anionic benzimidazole-based N-heterocyclic carbene (NHC) ligand (1−), N-(3,5-dimethylphenyl)benzimidazole was reacted with 2-bromoacetic acid to yield the corresponding benzimidazolium [1H2][Br]. Double deprotonation followed by metallation of [1H2][Br] with Ag2O produced the Ag–NHC complex [Ag(1)]n (2), which exhibited good solubility in organic solvents despite its multinuclear nature. Crystallographic analysis of 2 revealed a dodecametallic structure (n=12) comprising mononuclear [Ag(1)] and dinuclear [Ag2(1)2] subunits, the latter of which featured close Ag⋯Ag contacts. Transmetallation of 1− from Ag to Ru via the reaction of [RuCl(η6-cymene)(μ–Cl)]2 with 2 afforded the Ru–NHC complex [RuCl(1)(η6-cymene)] (3), which demonstrated catalytic activity for transfer hydrogenation of CO, CN and CC bonds using isopropanol as the H2 source.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
