Synthesis of tetraalkylthio-substituted phthalocyanines and their complexation with AgI and PdII

Abstract

The synthesis of new metal-free and nickel(II) phthalocyanines substituted with four alkylthio groups SR (R = dodecyl or hexadecyl) is described. The new compounds have been characterized by elemental analyses, and IR, ¹H NMR and UV/VIS spectroscopy. The thio donors co-ordinate to Ag^I and Pd^II to give 2: 1 metal–nickel phthalocyanine species. The changes in the electronic spectra with respect to increasing concentration of Pd^II or Ag^I have been investigated.