Switchable catalysis and CO<sub>2</sub> sensing by reduction resistant, luminescent copper–thiolate complexes

Sahoo, Satya Ranjan; Bera, Debkumar; Saha, Sumit Kumar; Goswami, Nirmal

doi:10.1039/d2nr05396a

Nanoscale

2022

DOI: 10.1039/d2nr05396a

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Switchable catalysis and CO₂ sensing by reduction resistant, luminescent copper–thiolate complexes

Satya Ranjan Sahoo

Debkumar Bera

Sumit Kumar Saha

et al.

Abstract: Metal-thiolate complexes have been the focus of research for several years because of their unique photophysical properties and their use as a precursor for synthesizing various well-defined metal nanoclusters. A...

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2024

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Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Goswami,

Khatua,

Rani

et al. 2024

Inorg. Chem.

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Employing a series of azo-aromatic pincer-type cobalt(II) complexes, 1−5, and an imine-based cobalt complex, 6, a highly efficient catalytic protocol for the cycloaddition of CO 2 with epoxides at low pressure of CO 2 is reported. The electronwithdrawing group-substituted ligands containing complexes 2 and 4 were most efficient. The catalytic protocol with 2 involved a synergistic participation of an azo-aromatic catalyst (0.1 mol %) and tetra-butyl ammonium iodide (TBAI), a cocatalyst (0.2 mol %) at 90 °C temperature, and 1 bar CO 2 pressure. A very good conversion, high turnover number, and reusability were observed. Complex 4 worked directly in the reaction, and its efficiency was similar to the efficiency of 2 and TBAI. As 2 was synthesized from a cheaper CoCl 2 , 2 showed to be more stable than 4; the combination of 2 and TBAI was used for a detailed study. The imine-based complex 6 was less efficient than the corresponding azo-aromatic complex 5. The catalytic protocol was versatile. It was also very effective for the full conversion of bis-epoxides to bis-carbonates at only 2 bar of CO 2 pressure in 24 h. The reaction mechanism was investigated using various spectroscopic and computational studies.

show abstract

Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Goswami,

Khatua,

Rani

et al. 2024

Inorg. Chem.

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Switchable catalysis and CO₂ sensing by reduction resistant, luminescent copper–thiolate complexes

Abstract: Metal-thiolate complexes have been the focus of research for several years because of their unique photophysical properties and their use as a precursor for synthesizing various well-defined metal nanoclusters. A...

Cited by 1 publication

References 60 publications

Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

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Switchable catalysis and CO2 sensing by reduction resistant, luminescent copper–thiolate complexes

Abstract: Metal-thiolate complexes have been the focus of research for several years because of their unique photophysical properties and their use as a precursor for synthesizing various well-defined metal nanoclusters. A...

Cited by 1 publication

References 60 publications

Fixation of CO2 with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Fixation of CO2 with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Contact Info

Product

Resources

About

Switchable catalysis and CO₂ sensing by reduction resistant, luminescent copper–thiolate complexes

Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts

Fixation of CO₂ with Epoxides Catalyzed by Pincer-Type Azo-Aromatic Complexes of Cobalt as Catalysts