Synthesis and characterization of metal-free phthalocyanine containing 16-membered N2S2-donor macrocycles linked to a 2-pyridinyl methyl moiety

A metal-free phthalocyanine (H2Pc) containing 16-membered N2S2-donor macrocycles linked to a 2-pyridinyl methyl moiety has been prepared via cyclotetramerization of a phthalonitrile.