Electronic Coupling in Dimetallic Complexes with π-Conjugated Bridge

Authors: Chung, Min-Chul; Ahn, Ho-Geun; Kwak, Chee-Hun; Akita, Munetaka

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3347-3350(4)

Publisher: American Scientific Publishers

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Abstract:

Compound 2, [(η5-C5Me5) Fe(dppe)]2 (μ-C≡C-CH=CH-C≡C), was prepared by the reaction of compound 1, [η5-C5Me5) Fe(dppe)]+2 (μ2-C=CH-CH=CH-HC=C) · (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, Kc, 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 π-π band of the delocalized complex (Robin-Day Mixed-valence Class III) and the effective coupling parameter, Hab, is consistent with the presence of electronic delocalization.

Keywords: IRON; CONJUGATED-CHAIN; DIMETALLIC COMPLEX; CYCLIC VOLTAMMETRY

Document Type: Research article

DOI: 10.1166/jnn.2006.007

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