Disproportionation, Electrochemistry, and Electronic Coupling Involving Mononuclear and Binuclear Cobalt Phthalocyanine Derivatives.
Abstract
Electronic spectroscopic data are reported for Cobalt(I), Co(II) and Co(III) mononuclear tetraneopentoxcyphthalocyanine (TNPc) and binuclear bis (tri(neopentoxy)phthalocyanine) species in solution and film phases. Electrochemical data show that the Co(II)TNPc species cannot exist in a non or weakly coordinating solvent containing hydroxide ion. Such solutions cause disproportionation of Co(II)TNPc to a 1:1 mixture of Co(I)TNPc and Co(III)TNPc. The detailed electrochemistry of this system is explored. The chemistry of these two oxidation states towards heat, light, acids, bases, carbonate and sulphite ion are briefly reported for solution and film phase. The degree of intermolecular electronic coupling which occurs either through space, through the bridge or directly in cofacial conformers is discussed in terms of the nature of the bridge and oxidation state of the cobalt. Keywords: Disproportionation, Electrochemistry, Phthalocyanine, Binuclear.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADA177344
Entities
People
- Alfred B. Lever
- Michael R. Hempstead
- Milan Melnik
- Wie Liu
- William A. Nevin
Organizations
- University of York