Electrochemistry of Ru-Fe Heterobimetallic Complexes and the SAM on Au Surface

Abstract

Abstract: Heterobimetallic Ru-Fe complex trans-RuCl(dppm)₂(C≡CFc)(1)(Fc=C₅H₄FeC₅H₅, dppm=(C₆H₅)₂PCH₂P(C₆H₅)₂) was functionalized to give Ru(dppm)₂(C≡CFc)(C≡CPhOCH₃)(2), [Ru(dppm)²(C≡CFc)(N≡CCH₂CH₂NH₂)][PF₆](3) and[Ru(dppm)₂(C≡CFc)(N≡CCH₂CH₂NH·C(O)(CH₂)₁₀SH)][PF₆](4) for surface binding. Cyclic voltametric techniques were performed on these complexes to study the extent of perturbation of the surface binding “tail” on the overall electrochemical peroperties. It is found that the substituent on the Ru center adjusts the electron density on the Ru atom and affects the redox properties of the Ru center. However, this substituent effect is not transferred through the acetylene bond to the ferrocenyl moiety. Complex 4 forms a stable and order SAM on the Au surface and CV was used to study the film growth and surface coverage.

Key words: Ferrocene, Ruthenium, Heterobimetallic complex, CV, Self-assembly monolayer(SAM)

CLC Number:

O646

TrendMD:

LI Zhao-Hui, Fehlner T. P., FU Xian-Zhi . Electrochemistry of Ru-Fe Heterobimetallic Complexes and the SAM on Au Surface[J]. Chem. J. Chinese Universities, 2004, 25(11): 2090.

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Electrochemistry of Ru-Fe Heterobimetallic Complexes and the SAM on Au Surface

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