Photochemistry between a ruthenium(ii) pyridylimidazole complex and benzoquinone: simple electron transferversusproton-coupled electron transfer
نویسندگان
چکیده
منابع مشابه
Photochemistry between a ruthenium(II) pyridylimidazole complex and benzoquinone: simple electron transfer versus proton-coupled electron transfer.
A ruthenium(II) complex with two 4,4'-bis(trifluoromethyl)-2,2'-bipyridine chelates and a 2-(2'-pyridyl)imidazole ligand was synthesized and characterized by electrochemical and optical spectroscopic means. The respective complex has the potential to act as a combined electron-proton donor when promoted to its long-lived (3)MLCT excited state with visible light. The possibility of proton-couple...
متن کاملA mononuclear ruthenium complex showing multiple proton-coupled electron transfer toward multi-electron transfer reactions.
Two new ruthenium(II) complexes bearing dissociable protons, [Ru(trpy)(H(2)bim)Cl]PF(6) (1) and [Ru(trpy)(H(2)bim)(OH(2))](PF(6))(2) (2) (H(2)bim = 2,2'-biimidazole and trpy = 2,2':6',2''-terpyridine), were synthesized and characterized, where the H(2)bim and M-OH(2) moieties are expected to serve as proton-dissociation sites. Single crystal X-ray diffraction analyses revealed that the H(2)bim ...
متن کاملProton-coupled electron transfer.
Proton-coupled electron transfer (PCET) is an important mechanism for charge transfer in a wide variety of systems including biology- and materials-oriented venues. We review several areas where the transfer of an electron and proton is tightly coupled and discuss model systems that can provide an experimental basis for a test of PCET theory. In a PCET reaction, the electron and proton may tran...
متن کاملWhat can electron impact spectroscopy offer to photochemistry? Triplet states, negative ions and intramolecular electron transfer
The principles of the electron impact methods Electron Energy Loss (EEL) spectroscopy, Electron Transmission (ET) spectroscopy, measurement of EnergyDependence (ED) of vibrational excitation, and Dissociative Attachment (DA) spectroscopy are briefly introduced. The possibilities of modem instrumentation are illustrated with the examples of molecular oxygen and 1,3-butadiene. The following subje...
متن کاملPhotochemistry of organoborates: intra-ion pair electron transfer to cyanines
Cyanine borate (R(Ph)3B-; R alkyl) salts dissolved in non-polar solvents exist predominantly as ion pairs. Irradiation of the ion pair with visible light absorbed by the cyanine leads to formation of a locally excited singlet state of the dye. The singlet excited cyanine in the ion pair is capable of oxidizing the borate anion to the boranyl radical (R(Ph)3B.) The rate constant for this electro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photochem. Photobiol. Sci.
سال: 2013
ISSN: 1474-905X,1474-9092
DOI: 10.1039/c2pp25270h