Electrochemical study was conducted using an Epsilon BAS potentiostat. Cyclic voltammograms were obtained using a three-electrode cell under nitrogen at room temperature. The electrodes used were a glassy carbon
Keywords: Catalysis • Coumarin • Electron transfer • Hydrogenase model • OrganometallicA new organometallic complex coupling photoactive coumarin to a diironhexacarbonyl unit has been successfully prepared and its composition and electronic structure confirmed by elemental and spectroscopic analyses. Emission spectral analysis of the complex reveals photoinduced intramolecular electron transfer from coumarin to the iron-carbonyl moiety. The compound is electrochemically reduced at -1.24 V vs. Fc/Fc + . This reduction is irreversible, attesting to the instability of the complex. Electrochemical evolution of hydrogen in the presence of the complex has been studied and results are discussed.
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