Novel crown ether-substituted phthalocyanines

A novel macrocycle has been synthesized from 4ʹ-(alpha-bromoacetyl)benzo-15-crown5, 4-nitrophthalonitril and diethyl malonate; its cyclotetramerization gives Cu(II), Co(II) and Pd(II) phthalocyanines (Pcs) with four benzo-15-crown-5 substituents on the periphery. The effects of alkali metal cations with these Pcs has been investigated through the changes in the visible spectra. The newly synthesized compounds have also been characterized by elemental analyses, IR, 1H NMR.