Photochemical Formation of Ruthenium Phthalocyanine φ-Cation Radical Species
作者： Tebello Nyokong , Zbigniew Gasyna , Martin J. Stillman
DOI: 10.1016/S0020-1693(00)85653-4
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摘要: Abstract Upon Q-band excitation (irradiation wavelength > 580 nm) ruthenium(II) phthalocyanine complexes can be quantitatively photooxidized to stable φ- cation radical species. The photooxidation carried out at either room temperature using CH 2 Cl solutions containing CBr 4 as an 'irreversible' electron acceptor, or in low-temperature (79 K) 2-methyl- tetrahydrofurane 2,3-dichloro- 5,6-dicyanobenzoquinone a 'reversible' acceptor. Absorption and magnetic circular dichroism (MCD) spectra indicate that there are two major, resolved transitions the visible region, one 510 nm other 700 nm. MCD of transition shows it is non-degenerate, while seen degenerate case Ru(II)Pc(−2)(CO)DMF temperature.
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