Preparation, isolation and electrochemical characterization of cobalt porphyrins with Ru(NH3)52+ complexes coordinated to 4-cyanophenyl substituents in the 5, 10, 15 and 20 positions on the porphyrin ring
✍ Scribed by BEAT STEIGER; FRED C. ANSON
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 79 KB
- Volume
- 03
- Category
- Article
- ISSN
- 1088-4246
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✦ Synopsis
A procedure has been devised by which quantitative coordination of Ru ( NH ~3~)~5~^2+^ groups to the nitrile sites in [5,10,15,20-tetrakis(4-cyanophenyl)porphyrinato]cobalt(II) and [5,10,15,20-tetrakis(4-cyano-2,6-dimethylphenyl)porphyrinato]cobalt(II) can be achieved. The procedure takes advantage of the solubility of both [ Ru ( NH ~3~)~5~( OSO ~2~ CF ~3~)]( CF ~3~ SO ~3~)~2~ and either porphyrin in a mixed solvent consisting of 1,2-dimethoxyethane/N,N-dimethylacetamide (27:1 v/v). This new synthetic procedure allowed the fully ruthenated porphyrins to be isolated as solids in milligram quantities. The products were characterized using cyclic and rotating disk voltammetry and infrared and NMR spectroscopy.