New phosphorus-containing metal phthalocyanine complexes. Synthesis and spectral and electrochemical studies

Hitherto unknown phosphorus-containing 4,5-bis(diethoxyphosphorylmethyl)- and 4-methyl-5-diethoxyphosphorylmethylphthalonitriles were synthesized starting from o-xylene. Their tetramerization afforded free phthalocyanine ligands and their complexes with Zn, Ni, Co, and a number of rare-earth metals. The spectral and electrochemical properties of the phthalocyanines synthesized were studied.