Electro- and photochemical H₂ generation by Co(ii) polypyridyl-based catalysts bearing ortho-substituted pyridines.

ABSTRACT: Cobalt(ii) complexes featuring hexadentate amino-pyridyl ligands have been recently discovered as highly active catalysts for the Hydrogen Evolution Reaction (HER), whose high performance arises from the possibility of assisting proton transfer processes via intramolecular routes involving detached pyridine units. With the aim of gaining insights into such catalytic routes, three new proton reduction catalysts based on amino-polypyridyl ligands are reported, focusing on substitution of the pyridine ortho-position. Specifically, a carboxylate (C2) and two hydroxyl substituted pyridyl moieties (C3, C4) are introduced with the aim of promoting intramolecular proton transfer which possibly enhances the efficiency of the catalysts. Foot-of-the-wave and catalytic Tafel plot analyse

SUBMITTER: Lucarini F 

PROVIDER: S-EPMC10334870 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature