Abstract
The benchmarking of the performance for H2 evolution of cobalt diimine-dioxime catalysts is provided based on a comprehensive study of their catalytic mechanism. The latter follows an ECE'CC pathway with intermediate formation of a Co(II)-hydride intermediate and second protonation possibly at a basic site of the ligand, acting as a proton relay. This suggests an intramolecular coupling between the hydride and protonated ligand as the proton concentration-independent rate-determining step controlling the turnover frequency for H2 evolution.
Original language | English (US) |
---|---|
Pages (from-to) | 2671-2679 |
Number of pages | 9 |
Journal | ChemElectroChem |
Volume | 8 |
Issue number | 14 |
DOIs | |
State | Published - Jul 14 2021 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Catalysis
- Electrochemistry
Keywords
- Cobalt hydride
- Cyclic Voltammetry
- Hydrogen
- Mechanism
- Molecular Catalysis
- Proton Relay