The first crystallographically characterised ruthenium(VI) alkylimido porphyrin competent for aerobic epoxidation and hydrogen atom abstraction

The syntheses of [RuVI(Por)(NAd)(O)] and [RuVI(2,6-F2-TPP)(NAd)2] were described. [RuVI(2,6-F2-TPP)(NAd)(O)] capable of catalysing aerobic epoxidation of alkenes has been characterised by X-ray crystallography with Ru=NAd and Ru=O bond distances being 1.778(5) A and 1.760(4) A (∠O-Ru-NAd: 174.37(19)o), respectively. Its first reduction potential is 740 mV cathodically shifted from that of [RuVI(2,6-F2-TPP)(O)2].