Abstract
In this work, axial MeCN ligands of highly active iron(II) and iron(III) tetra N-heterocyclic carbene (NHC) olefin epoxidation (pre-)catalysts are substituted with t-BuCN and PhCN, bearing less activated C–H bonds. The obtained complexes are characterized by NMR spectroscopy, electrospray mass spectrometry (ESI-MS), single crystal X-ray diffraction (SC-XRD), cyclic voltammetry (CV), UV/Vis spectroscopy and elemental analysis. The novel compounds exhibit significantly more stable axial ligands against C–H oxidation, as demonstrated by UV/Vis kinetics and depict similar electrochemical properties to their MeCN derivatives. Thus, the new complexes pave the way towards more robust catalysts by enhancing the stability against oxidation of the axial ligand, which competes with substrate oxidation.
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.
