Direct photochemical activation of non-heme Fe(iv)[double bond, length as m-dash]O complexes

Juan Chen; Apparao Draksharapu; Emma Harvey; Waqas Rasheed; Lawrence Que; Wesley R Browne

doi:10.1039/c7cc07452b

Direct photochemical activation of non-heme Fe(iv)[double bond, length as m-dash]O complexes

Chem Commun (Camb). 2017 Nov 14;53(91):12357-12360. doi: 10.1039/c7cc07452b.

Authors

Juan Chen¹, Apparao Draksharapu, Emma Harvey, Waqas Rasheed, Lawrence Que, Wesley R Browne

Affiliation

¹ Stratingh Institute for Chemistry, Faculty of Science and Engineering, Nijenborgh 4, 9747AG, Groningen, The Netherlands. w.r.browne@rug.nl.

PMID: 29099136
DOI: 10.1039/c7cc07452b

Abstract

Near-UV excitation of non-heme Fe^IV[double bond, length as m-dash]O complexes results in light intensity dependent increase in reaction rates for the oxidation of C-H bonds even at low temperature (-30 °C). The enhancement of activity is ascribed to the ligand-to-[Fe^IV[double bond, length as m-dash]O] charge transfer character of the near-UV bands to generate a highly reactive [(L⁺) Fe^III-O*] species. The enhancement is not observed with visible/NIR excitation of the d-d absorption bands.