15168-81-7Relevant articles and documents
Homogeneous Electrochemical Reduction of CO2 to CO by a Cobalt Pyridine Thiolate Complex
Ahmed, Md Estak,Dey, Abhishek,Dey, Subal,Rana, Atanu,Saha, Rajat
, p. 5292 - 5302 (2020)
The chemical and electrochemical reduction of CO2 to value added chemicals entails the development of efficient and selective catalysts. Synthesis, characterization and electrochemical CO2 reduction activity of a air-stable cobalt(III) diphenylphosphenethano-bis(2-pyridinethiolate)chloride [{Co(dppe)(2-PyS)2}Cl, 1-Cl] complex is divulged. The complex reduces CO2 under homogeneous electrocatalytic conditions to produce CO with high Faradaic efficiency (FE > 92%) and selectivity in the presence of water. Through detailed electrochemical investigations, product analysis, and mechanistic investigations supported by theoretical calculations, it is established that complex 1-Cl reduces CO2 in its Co(I) state. A reductive cleavage leads to a dangling protonated pyridine arm which enables facile CO2 binding through a H-bond donation and facilitates the C-O bond cleavage via a directed protonation. A systematic benchmarking of this catalyst indicates that it has a modest overpotential (～180 mV) and a TOF of ～20 s-1 for selective reduction of CO2 to CO with H2O as a proton source.
Cobalt-catalysed asymmetric hydrovinylation of 1,3-dienes
Timsina, Yam N.,Sharma, Rakesh K.,Rajanbabu
, p. 3994 - 4008 (2015/06/25)
In the presence of bidentate 1,n-bis-diphenylphosphinoalkane-CoCl2 complexes {Cl2Co[P ～ P]} and Me3Al or methylaluminoxane, acyclic (E)-1,3-dienes react with ethylene (1 atmosphere) to give excellent yields of hydrovinylat
