Intermediates Involved in the 2e鈥?/sup>/2H+ Reduction of CO2 to CO by Iron(0) Porphyrin

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• 作者：Biswajit Mondal ; Atanu Rana ; Pritha Sen ; Abhishek Dey
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：September 9, 2015
• 年：2015
• 卷：137
• 期：35
• 页码：11214-11217
• 全文大小：373K
• ISSN：1520-5126

文摘

The reduction of CO₂ by an iron porphyrin complex with a hydrogen bonding distal pocket involves at least two intermediates. The resonance Raman data of intermediate I, which could only be stabilized at 鈭?5 掳C, indicates that it is a Fe(II)鈥揅O₂^{2鈥?/sup> adduct and is followed by an another intermediate II at 鈭?0 掳C where the bound CO₂ in intermediate I is protonated to form a Fe(II)鈥揅OOH species. While the initial protonation can be achieved using weak proton sources like MeOH and PhOH, the facile heterolytic cleavage of the C鈥揙H bond in intermediate II requires strong acids.}