scholarly journals Rationalizing Photo‐Triggered Hydrogen Evolution Using Polypyridine Cobalt Complexes: Substituent Effects on Hexadentate Chelating Ligands

ChemSusChem ◽  
2021 ◽  
Author(s):  
Fiorella Lucarini ◽  
David Bongni ◽  
Philippe Schiel ◽  
Gabriele Bevini ◽  
Elisabetta Benazzi ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Substituent Effects ◽  
Cobalt Complexes ◽  
Chelating Ligands

scholarly journals Rationalizing photo‐triggered hydrogen evolution using polypyridine cobalt complexes: substituent effects on hexadentate chelating ligands

ChemSusChem ◽  
2021 ◽  
Author(s):  
Fiorella Lucarini ◽  
David Bongni ◽  
Philippe Schiel ◽  
Gabriele Bevini ◽  
Elisabetta Benazzi ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Substituent Effects ◽  
Cobalt Complexes ◽  
Chelating Ligands

Cobaloxime-Based Double Complex Salts as Efficient and Versatile Catalysts for the Light-Driven Hydrogen Evolution Reaction

2020 ◽  
Author(s):  
Elisabeth Hofmeister ◽  
Jisoo Woo ◽  
Tobias Ullrich ◽  
Lydia Petermann ◽  
Kevin Hanus ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Systematic Study ◽  
Cobalt Complexes ◽  
Spectroscopic Studies ◽  
Double Complex ◽  
Double Complex Salts ◽  
Noble Metal Catalysts ◽  
Reduction Potentials ◽  
Complex Salts

Cobaloximes and their BF<sub>2</sub>-bridged analogues have emerged as promising non-noble metal catalysts for the photocatalytic hydrogen evolution reaction (HER). Herein we report the serendipitous discovery that double complex salts such as [Co(dmgh)<sub>2</sub>py<sub>2</sub>]<sup>+</sup>[Co(dmgBPh<sub>2</sub>)<sub>2</sub>Cl<sub>2</sub>]<sup>-</sup> can be obtained in good yields by treatment of commercially available [Co(dmgh)<sub>2</sub>pyCl] with triarylboranes. A systematic study on the use of such double complex salts and their single salts with simple counterions as photocatalysts revealed HER activities comparable or superior to existing cobaloxime catalysts and suggests ample opportunities for this compound class in catalyst/photosensitizer dyads and immobilized architectures. Preliminary electrochemical and spectroscopic studies indicate that one key advantage of these charged cobalt complexes is that the reduction potentials as well as the electrostatic interaction with charged photosensitizers can be tuned.

ChemInform Abstract: SCHIFF BASE TETRADENTATE CHELATING LIGANDS AND COBALT COMPLEXES FROM ACETYLINDANONES

1981 ◽  
Vol 12 (22) ◽  
Author(s):  
A. DRUSIANI ◽  
L. PLESSI ◽  
A. BIGOTTO ◽  
G. PELLIZER ◽  
G. COSTA
Keyword(s):  
Schiff Base ◽  
Cobalt Complexes ◽  
Chelating Ligands

Reaction of Acyl(hydrido)cobalt(III) Complexes with (2-Diphenylphosphanyl)phenol and Influence of Chelating Ligands Containing Hard/Soft Donor Atoms on the Stability of Cobalt Complexes

2005 ◽  
Vol 24 (11) ◽  
pp. 2612-2616 ◽  
Author(s):  
Hongjian Sun ◽  
Xiaoyan Li ◽  
Hans-Friedrich Klein ◽  
Ulrich Flörke ◽  
Hans-Jürgen Haupt
Keyword(s):  
Cobalt Complexes ◽  
Chelating Ligands ◽  
The Stability

Electrocatalytic Hydrogen Evolution by Cobalt Complexes with a Redox Non-Innocent Polypyridine Ligand

2021 ◽  
Author(s):  
Jiale Liu ◽  
Rong-Zhen Liao ◽  
Frank W. Heinemann ◽  
Karsten Meyer ◽  
Randolph P. Thummel ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Cobalt Complexes

A Smorgasbord of 17 Cobalt Complexes Active for Photocatalytic Hydrogen Evolution

2018 ◽  
Vol 24 (39) ◽  
pp. 9820-9832 ◽  
Author(s):  
Ross W. Hogue ◽  
Olivier Schott ◽  
Garry S. Hanan ◽  
Sally Brooker
Keyword(s):  
Hydrogen Evolution ◽  
Cobalt Complexes ◽  
Photocatalytic Hydrogen Evolution

Schiff base tetradentate chelating ligands and cobalt complexes from acetylindanones

1981 ◽  
Vol 55 ◽  
pp. L29-L31 ◽  
Author(s):  
A. Drusiani ◽  
L. Plessi ◽  
A. Bigotto ◽  
G. Pellizer ◽  
G. Costa
Keyword(s):  
Schiff Base ◽  
Cobalt Complexes ◽  
Chelating Ligands

The Dark Side of Molecular Catalysis: Diimine–Dioxime Cobalt Complexes Are Not the Actual Hydrogen Evolution Electrocatalyst in Acidic Aqueous Solutions

ACS Catalysis ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 3727-3737 ◽  
Author(s):  
Nicolas Kaeffer ◽  
Adina Morozan ◽  
Jennifer Fize ◽  
Eugenie Martinez ◽  
Laure Guetaz ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Evolution ◽  
Cobalt Complexes ◽  
Dark Side ◽  
Molecular Catalysis
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