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Electronic Coupling in Dimetallic Complexes with π-Conjugated Bridge

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Compound 2, [(η 5-C5Me5) Fe(dppe)]2 (μ-C≡C–CH=CH–C≡C), was prepared by the reaction of compound 1, [η 5-C5Me5) Fe(dppe)]+ 2 (μ 2-C=CH–CH=CH–HC=C) ยท (PF 6)2–, with KOBut. Compound 2 showed two quasi-reversible one-electron oxidations at −0.674 and −0.253 V, respectively. The comproportionation constant, K c, was calculated from these measurements. The mixed-valence(MV) radical cation 2 + showed an absorption peak at 1586 nm, which was assigned to the MV ππ band of the delocalized complex (Robin-Day Mixed-valence Class III) and the effective coupling parameter, H ab, is consistent with the presence of electronic delocalization.
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Keywords: CONJUGATED-CHAIN; CYCLIC VOLTAMMETRY; DIMETALLIC COMPLEX; IRON

Document Type: Research Article

Publication date: 2006-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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