Liquid State N-15 Nmr Studies Of N-15 Isotope Labeled Phthalocyanines

Abstract

N-15 labeled soluble metallo- and metal-free phthalocyanines are described for the first time. The complexes were synthesized starting from phthalic anhydride derivatives using 98% N-15 enriched urea. The effects of the substitution pattern, aggregation, and coordinated metal on N-15 chemical shifts in liquid state NMR were studied.