BIS(2,3-NAPHTHALOCYANINATO)LUTETIUM(III) AND NAPHTHALOCYANINATO)(PHTHALOCYANINATO)LUTETIUM(III) COMPLEXES - SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION, AND ELECTROCHEMISTRY

Bis(2,3 -naphthalocyaninato)lutetium(III) and (2,3 -naphthalocyaninato ) (phthalocyaninato)lutetium(III) have been synthesized by condensatio n, with lutetium acetate, of 2 equiv of dilithium 2,3-naphthalocyanina te or with 1 equiv of dilithium phthalocyaninate and 1 equiv of the di lithium 2,3-naphthalocyaninate. These compounds were characterized by UV/visible, IR, H-1 NMR, and MS spectroscopies and electrochemical tec hniques. The unpaired electron is delocalized over the two macrocycles of the sandwich-type complexes. The HOMO-LUMO gap, 0.28 V, is the nar rowest ever reported for compounds of this type.