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

Biswajit Mondal; Atanu Rana; Pritha Sen; Abhishek Dey

doi:10.1021/jacs.5b05992

Intermediates Involved in the 2e^-/2H⁺ Reduction of CO₂ to CO by Iron(0) Porphyrin

Biswajit Mondal
, Atanu Rana
, Pritha Sen
, Abhishek Dey

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

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.

Original language	English
Pages (from-to)	11214-11217
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	137
Issue number	35
DOIs	https://doi.org/10.1021/jacs.5b05992
State	Published - 9 Sep 2015
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.5b05992

Cite this

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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)-CO22- 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.",

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AU - Mondal, Biswajit

AU - Rana, Atanu

AU - Sen, Pritha

AU - Dey, Abhishek

PY - 2015/9/9

Y1 - 2015/9/9

N2 - 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)-CO22- 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.

AB - 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)-CO22- 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.

UR - https://www.scopus.com/pages/publications/84941242934

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JF - Journal of the American Chemical Society

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