SYNTHESIS OF TETRAALKYLTHIO-SUBSTITUTED PHTHALOCYANINES AND THEIR COMPLEXATION WITH AG(I) AND PD(II)

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, H-1 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.