Ruthenium coordinated dimer of phenanthroline-fused phthalocyaninato zinc complex. Synthesis, spectroscopic, and electrochemical properties

Unsymmetrical phenanthroline-fused phthalocyaninato zinc monomer 2,3,9,10,16,17-hexakis(2,6-dimethyl-phenoxy)-22,25-diaza-(1,10-phenanthrolino)[5,6-c(1)] 1 was prepared by mixed cyclic tetra-merization of two phthalonitrile precursors. Reaction of 1 with RuCl3 center dot xH(2)O led to the isolation of the ruthenium coordinated phthalocyanine dimer, namely bis(2,3,9,10,16,17-hexakis(2,6-dimethyl-phenoxy)-22,25-diaza-(1,10-phenanthrolino)[5,6-c(1)]phthalocyaninato zinc complex) ruthenium dichloride 2. This is unambiguously evidenced by the mass and NMR spectroscopic characterization of 2 together with the fluorescence quenching of the monomer 1 after the formation of the dimer 2. (c) 2014 Elsevier Ltd. All rights reserved.