Azaphthalocyanines with fused triazolo rings: formation of sterically stressed constitutional isomers

Abstract

The presented work deals with synthesis and isolation of constitutional isomers of triazolo-fused azaphthalocyanines. Distribution of the isomers did not follow the statistical calculations due to steric effects of the substituents preferring the least sterically stressed C-4h isomer.

Keywords

• phthalocyanines
• constitutional isomers
• chromatography
• triazole
• tetrazole