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Ultrafast Vibrational Spectroscopy of Photochemical High-Valent Iron Formation

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Abstract

The light-induced formation of a super-oxidized iron complex via dinitrogen cleavage from a ferric azido-iron precursor is measured by femtosecond UV/Vis-pump mid-infrared-probe spectroscopy. The spectro-temporal evolution is indicative of two photooxidation pathways: (i) a prompt N2-dissociation directly on the optically prepared excited state of the precursor and (ii) a delayed N2-elimination from the vibrationally hot ground state.

© 2016 Optical Society of America

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