Mechanistic and kinetic studies of cobalt macrocycles in a photochemical CO2 reduction system: Evidence of Co-CO2 adducts as intermediates

T Ogata, S Yanagida, BS Brunschwig…

Index: Ogata, Tomoyuki; Yanagida, Shozo; Brunschwig, Bruce S.; Fujita, Etsuko Journal of the American Chemical Society, 1995 , vol. 117, # 25 p. 6708 - 6716

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Citation Number: 121

Abstract

Abstract: Cobalt macrocycles mediate electron transfer in the photoreduction of C02 with p- terphenyl as a photosensitizer and a tertiary amine as a sacrificial electron donor in a 5: l acetonitrile/methanol mixture. The mechanism and kinetics of this system have been studied by continuous and flash photolysis techniques. Transient spectra provide evidence for the sequential formation of thep-terphenyl radical anion, the COIL+ complex, the [COIL-