Electrochemical behavior of phthalocyanines containing high oxidation state central metals: Titanium(IV), vanadium(IV), and tantalum(V)

Vongani P. Chauke, Yasin Arslanoglu, Tebello Nyokong*

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Özet

The syntheses of 2,(3)-(peripheral) and 1,(4)-(non-peripheral) (2-mercaptopyridine)phthalocyanine complexes of titanium(IV) oxide (5a and 6a, respectively), vanadium(IV) oxide (7a and 8a, respectively) and tantalum(V) hydroxide (9a, peripheral only) and their electrochemical characterization are presented in this report. Their electrochemistry is compared to that of thiophenyl and thiobenzyl substituted derivatives. The non-peripherally substituted complexes are more difficult to reduce than peripherally substituted derivatives. In addition, the mercaptopyridine substituted derivatives are more difficult to reduce compared to benzylmercapto and phenylmercapto derivatives, and aryl easier reduce than alkyl substitution. Spectroelectrochemistry of the complexes confirmed metal and ring redox processes for TaPc and TiPc derivatives and ring based processes only for VPc complexes.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)2132-2139
Sayfa sayısı8
DergiPolyhedron
Hacim30
Basın numarası12
DOI'lar
Yayın durumuYayınlandı - 2011

Finansman

This work was supported by the Department of Science and Technology (DST) and National Research Foundation (NRF) , South Africa through DST/NRF South African Research Chairs Initiative for Professor of Medicinal Chemistry and Nanotechnology as well as Rhodes University.

FinansörlerFinansör numarası
National Research Foundation
Rhodes University
Department of Science and Technology, Ministry of Science and Technology, India

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