TTBUPCCRCL2H A SPARINGLY SOLUBLE TETRA-T-BUTYL-PHTHALOCYANINATO-CHLORO-CHROMIUM COMPLEX

An axially substituted chloro complex of tetra-t-butylphthalocyaninato -chromium was prepared by chromium insertion into metal-free tetra-t-b utylphthalocyanine (TTBuPcH2). By extracting the soluble components in to acetonitrile and pentane a product with the composition TTBuPcCrCl2 H was obtained. It was shown to contain anionic phthalocyanine moietie s. In aqueous sodium hydroxide xo-bis(tetra-t-butylphthalocyaninato)ch romium(III) is formed. Boiling pyridine replaces one of the Cl ligands yielding TTBuPcCrCl.2py. Thermogravimetric analysis showed the elimin ation of both pyridine molecules between 105 and 215-degrees-C and Cl elimination at higher temperatures. TTBuPcCrCl.2py is oxidized by thio nyl chloride to TTBuPc(-I)Cr(III)Cl2. Reaction with pyridine reforms T TBuPcCl.2py. All newly synthesized products were characterized by elem entary analysis, IR, UV-Vis and FAB mass spectrometry.