Selective synthesis of clamshell-type binuclear phthalocyanines

A direct selective synthesis of clamshell -type binuclear phthalocyanines via structural modification of monohydroxyphthalocyanines in up to 95% yield has been developed. Previously unknown clamshell -type Lu complex has been obtained. The spectral properties of the resulting binuclear phthalocyanines have been studied.