title: Intermediates Involved in the 2e(-)/2H(+) Reduction of CO2 to CO by Iron(0) Porphyrin.
abstract: 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 -95 °C, indicates that it is a Fe(II)-CO2(2-) adduct and is followed by an another intermediate II at -80 °C where the bound CO2 in intermediate I is protonated to form a Fe(II)-COOH species. While the initial protonation can be achieved using weak proton sources like MeOH and PhOH, the facile heterolytic cleavage of the C-OH bond in intermediate II requires strong acids.
authors: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Kolkata 700032, India.
authors: Biswajit
authors: B
authors: Mondal
authors: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Kolkata 700032, India.
authors: Atanu
authors: A
authors: Rana
authors: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Kolkata 700032, India.
authors: Pritha
authors: P
authors: Sen
authors: Department of Inorganic Chemistry, Indian Association for the Cultivation of Science , Kolkata 700032, India.
authors: Abhishek
authors: A
authors: Dey