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Flexible Proton Responsive Ligand-based Mn(I)-Complexes for CO2 Hydrogenation: A DFT Study

Abstract

A series of flexible proton-responsive group substituted N^N-bidentate ligand based Mn(I)-complexes have been studied for base free CO2 hydrogenation. We show here that the proton responsive ligand plays a critical role for base free CO2 hydrogenation. Our calculated reaction free energy barrier values for heterolytic H2 cleavage show that such flexible proton-responsive ligands require a very low activation energy (~3 kcal/mol) barrier. Such flexible proton responsive ligands improve the strong dihydrogen (H···H) bonding, which in turn improves the heterolytic H2 cleavage- an important step for base free CO2 hydrogenation. Therefore, we believe that such flexible proton responsive ligand substituted metal complexes can be promising for base free CO2 hydrogenation reactions.

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Publication details

The article was received on 26 Dec 2017, accepted on 13 Apr 2018 and first published on 13 Apr 2018


Article type: Paper
DOI: 10.1039/C7CP08637G
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Flexible Proton Responsive Ligand-based Mn(I)-Complexes for CO2 Hydrogenation: A DFT Study

    K. S. Rawat and B. Pathak, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C7CP08637G

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