Strong electronic couplings between ferrocenyl centers mediated by bis-ethynyl/butadiynyl diruthenium bridges

Guo Lin Xu, Robert J. Crutchley, Maria C. DeRosa, Qing Jiang Pan, Hong Xing Zhang, Xiaoping Wang, Tong Ren

Research output: Contribution to journalArticlepeer-review

161 Scopus citations

Abstract

A series of trans-(FcC2n)Ru2(Y-DMBA) 4(C2mFc) with n, m = 1 and 2 and Y-DMBA as N,N′-dimethylbenzamidinate or N,N′-dimethyl-(3-methoxy)benzamidinate have been synthesized and characterized. The intramolecular Fc⋯Fc distances, established through single-crystal X-ray diffraction studies, range from 11.6 to 16.6 Å. Results from both voltammetric and spectroelectrochemical studies indicate that the (-C2n)Ru 2(Y-DMBA)4(C2m-) fragments are among the most efficient mediators of intramolecular hole transfer. Density-functional calculations offer both the insight on the ground-state electronic properties and unambiguous assignment for the observed electronic absorptions.

Original languageEnglish
Pages (from-to)13354-13363
Number of pages10
JournalJournal of the American Chemical Society
Volume127
Issue number38
DOIs
StatePublished - Sep 28 2005
Externally publishedYes

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