Dithia- and Dioxadiazuliporphyrin: Facile Generation of Carbaporphyrinoid Cation Radical and Dication

Natasza Sprutta ,  Marta Siczek ,  Miłosz Pawlicki ,  Tadeusz Lis ,  Lechosław Latos-Grażyński 

Wrocław University, Faculty of Chemistry, 14 F. Joliot-Curie, Wrocław 50-383, Poland

Abstract

Introduction of an azulene moiety to the porphyrinoid framework is of particular interest because of the unusual electronic properties of this bicyclic system. Exploration of this concept led to the synthesis of azuliporphyrin and its heteroanalogues - systems that exhibit borderline macrocyclic aromaticity and unusual reactivity pathways [1, 2].

The newly designed dithia- and dioxadiazuliporphyrins are nonaromatic porphyrinoids, easily oxidizable to their radical cations and, consequently, to the aromatic dications [3]. Combination of the azulene π system with the porphyrin-like macrocyclic framework results in a redox-switchable chromophore system with a potential for electrochromic and molecular conductivity applications.

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[1] D. A. Colby, T. D. Lash, Chem. Eur. J. 2002, 8, 5397.

[2] S. Venkatraman, V. G. Anand, V. PrabhuRaja, H. Rath, J. Sankar, T. K. Chandrashekar, W. Teng, K. R. Senge, Chem. Commun. 2002, 1660.

[3] N. Sprutta, M. Świderska, L. Latos-Grażyński, J. Am. Chem. Soc. 2005, 127, 13108.

 

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Presentation: poster at 18th Conference on Physical Organic Chemistry, Posters, by Natasza Sprutta
See On-line Journal of 18th Conference on Physical Organic Chemistry

Submitted: 2006-05-31 20:43
Revised:   2009-06-07 00:44