Dinuclear Co(II)Co(III) Mixed-Valence and Co(III)Co(III) Complexes with N- and O-Donor Ligands: Characterization and Water Oxidation Studies

2011 ◽  
Vol 50 (13) ◽  
pp. 6152-6157 ◽  
Author(s):  
Jia Luo ◽  
Nigam P. Rath ◽  
Liviu M. Mirica
Keyword(s):  
Water Oxidation ◽  
Mixed Valence ◽  
Donor Ligands

Oxidation of Mixed-Valence CoIII/FeIIComplexes Reversed at High pH:  A Kinetico-Mechanistic Study of Water Oxidation

2004 ◽  
Vol 43 (22) ◽  
pp. 7187-7195 ◽  
Author(s):  
Paul V. Bernhardt ◽  
Fernando Bozoglian ◽  
Brendan P. Macpherson ◽  
Manuel Martínez ◽  
André E. Merbach ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Mixed Valence ◽  
Mechanistic Study ◽  
High Ph

Mixed-valence manganese calcium oxides as efficient catalysts for water oxidation

2011 ◽  
Vol 40 (15) ◽  
pp. 3793-3795 ◽  
Author(s):  
Mohammad Mahdi Najafpour
Keyword(s):  
Water Oxidation ◽  
Mixed Valence

scholarly journals Abnormal N-heterocyclic Carbenes: More than Just Exceptionally Strong Donor Ligands

2011 ◽  
Vol 64 (8) ◽  
pp. 1113 ◽  
Author(s):  
Anneke Krüger ◽  
Martin Albrecht
Keyword(s):  
Water Oxidation ◽  
Bond Activation ◽  
Heterocyclic Carbenes ◽  
Oxidation Catalysis ◽  
Donor Ligands ◽  
Free Alcohol ◽  
Carbene Ligands ◽  
Transfer Processes ◽  
Oxidative Transformations ◽  
Electron Transfer Processes

Complexes comprising a so-called abnormal carbene ligand, which displays pronounced mesoionic character, have recently been shown to be competent catalyst precursors for bond activation processes and oxidative transformations, including base-free alcohol oxidation and water oxidation. In this highlight we propose that these abnormal carbene ligands are not just useful spectator ligands but also actively participate in the bond activation step. This mode of action is partially based on the exceptionally strong donor properties of the ligand and, specifically, on the mesoionic character of these abnormal carbenes. The mesoionic properties provide a reservoir for charges and holes and thus induce efficient ligand-metal cooperativity, which is beneficial in particular for oxidation catalysis that involves concerted proton and electron transfer processes.

Slow magnetic relaxation and water oxidation activity of dinuclear CoIICoIII and unique triangular CoIICoIICoIII mixed-valence complexes

2020 ◽  
Vol 49 (19) ◽  
pp. 6328-6340
Author(s):  
Ritwik Modak ◽  
Biswajit Mondal ◽  
Yeasin Sikdar ◽  
Jayisha Banerjee ◽  
Enrique Colacio ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Coordination Compounds ◽  
Magnetic Relaxation ◽  
Mixed Valence ◽  
Oxidation Catalysts ◽  
Oxidation Activity ◽  
Slow Magnetic Relaxation

Mixed valence cobalt based coordination compounds acting as single ion magnets and water oxidation catalysts.

A multilayer assembly of two mixed-valence Mn16-containing polyanions and study of their electrocatalytic activities towards water oxidation

2018 ◽  
Vol 47 (21) ◽  
pp. 7282-7289 ◽  
Author(s):  
Yu Du ◽  
Tian Yu ◽  
Zhijing Fu ◽  
Lihua Bi
Keyword(s):  
Water Oxidation ◽  
Mixed Valence ◽  
Composite Films

Electrocatalytic activities of two Mn16 cluster-containing polyanions towards water oxidation were comparatively studied in solution and composite films.

A facile corrosion approach to the synthesis of highly active CoOx water oxidation catalysts

2017 ◽  
Vol 5 (10) ◽  
pp. 5171-5177 ◽  
Author(s):  
Arindam Indra ◽  
Prashanth W. Menezes ◽  
Chittaranjan Das ◽  
Caren Göbel ◽  
Massimo Tallarida ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Water Oxidation ◽  
Room Temperature ◽  
Mixed Valence ◽  
Alkaline Ph ◽  
Oxidation Catalysts ◽  
Highly Active

Room temperature partial oxidation (corrosion) of cubic CoO led to the formation of mixed valence CoOx with better electrochemical water oxidation activities in alkaline pH. Activation of both octahedral Co3+ and Co2+ to layered oxohydroxide–hydroxide during alkaline electrochemical water oxidation has been demonstrated.

Facile water oxidation by dinuclear mixed-valence CoIII/CoII complexes: the role of coordinated water

2021 ◽  
Author(s):  
Atanu Dey ◽  
Anku Guha ◽  
Vierandra Kumar ◽  
Sumit Bawari ◽  
Tharangattu N. Narayanan ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Mixed Valence ◽  
Coordinated Water

Dinuclear mixed-valence CoIIICoII complexes, [CoIIICoII(LH2)2(X)(H2O)] (X = OAc or Cl), containing coordinated water show better OER activity than complex [CoIIICoII(LH2)2(vanillin)] that does not possess coordinated water.

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