The microwave-assisted synthesis and structural characterization of novel, dithia-bridged polymeric phthalocyanines containing a substituted thiophenylamine Schiff base

Abstract

Novel polymeric metal-free and metallo(Cu(II), Co(II), Ni(II), Zn(II) and Pb(II))-phthalocyanine complexes were synthesized using microwave irradiation and the products were purified by several (crystallization and preparative thin layer) techniques. The newly prepared compounds were characterized by a combination of elemental analyses, IR, 1H/13C NMR, 1H-1H COSY, MS and UV-Vis spectroscopy. In order to better understand the spectroscopy data (especially for 1H/13C NMR and 1H-1H COSY techniques), computational calculations were used for characterization at DFT/6-31G(d) level. The electronic spectra exhibited an intense ? ? ?* transition with characteristic Q and B bands of the phthalocyanine core. © 2009 Elsevier Ltd. All rights reserved.