Electrochemical oxidation-reduction of organometallic complexes. Effect of the oxidation state on the pathways for reductive elimination of dialkyliron complexes

1982 ◽  
Vol 1 (1) ◽  
pp. 155-169 ◽  
Author(s):  
W. Lau ◽  
J. C. Huffman ◽  
J. K. Kochi
Keyword(s):  
Electrochemical Oxidation ◽  
Oxidation State ◽  
Reductive Elimination ◽  
Organometallic Complexes ◽  
Oxidation Reduction

Local electrochemical oxidation/reduction: First step towards a new lithography?

1996 ◽  
Vol 68 (14) ◽  
pp. 1999-2001 ◽  
Author(s):  
Jean‐Pierre Locquet ◽  
Frédéric Arrouy ◽  
Erich Mächler ◽  
Michel Despont ◽  
Peter Bauer ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Oxidation Reduction

Fermi Energy Limitation at β-CuGaO2 Interfaces Induced by Electrochemical Oxidation/Reduction of Cu

2020 ◽  
Vol 3 (9) ◽  
pp. 9117-9125
Author(s):  
Issei Suzuki ◽  
Binxiang Huang ◽  
Takahisa Omata ◽  
Andreas Klein
Keyword(s):  
Electrochemical Oxidation ◽  
Fermi Energy ◽  
Oxidation Reduction ◽  
Energy Limitation

Selectivity in carbon–carbon coupling reactions at palladium(IV) and platinum(IV)

2019 ◽  
Vol 97 (7) ◽  
pp. 529-537 ◽  
Author(s):  
Richard J. Puddephatt
Keyword(s):  
Activation Energy ◽  
Transition State ◽  
Computational Study ◽  
Bond Formation ◽  
Reductive Elimination ◽  
Organometallic Complexes ◽  
Axial Position ◽  
Coupling Reactions ◽  
Methyl Group ◽  
Trigonal Bipyramidal

The isomerization and reductive elimination reactions from octahedral organometallic complexes of palladium(IV) and platinum(IV) usually occur through five-coordinate intermediates that cannot be directly detected. This paper reports a computational study of five-coordinate complexes of formulae [PtMe3(bipy)]+, [PtMe2Ph(bipy)]+, and [PtMe(CH2CMe2C6H4)(bipy)]+ (M = Pd or Pt, bipy = 2,2′-bipyridine), particularly with respect to reactivity and selectivity in reductive elimination. All of the complexes are predicted to have square pyramidal structures with the bipy and two R groups in the equatorial positions and one R group in the axial position, and axial–equatorial exchange occurs by a pairwise mechanism, with the transition state having a pinched trigonal bipyramidal (PTBP) stereochemistry, with one nitrogen and two R groups in the trigonal plane. The activation energy for isomerization is lower than that for reductive elimination in all cases. For the complexes [MMe2Ph(bipy)]+, the activation energies for reductive elimination with Me–Me or Me–Ph coupling are similar. For the complexes [MMe(CH2CMe2C6H4)(bipy)]+, the reductive elimination with Me–C6H4 bond formation from the isomer with the methyl group in the axial position is predicted and is attributed to it having the best conformation of the Me and C6H4 groups for C–C bond formation. In all cases, the selectivity for reductive elimination is similar for M = Pd or Pt, but reactivity is higher for M = Pd. The relevance of this work to selectivity in catalysis is discussed.

Ti4O7 Used as Electrode in Biomedicine and for Electrochemical Study of Scavenging Mechanism

2011 ◽  
Vol 493-494 ◽  
pp. 896-901
Author(s):  
María Canillas ◽  
Ann Rajnicek ◽  
C. Rosero ◽  
Eva Chinarro ◽  
Berta Moreno
Keyword(s):  
Oxidation State ◽  
Reactive Species ◽  
Electrochemical Methods ◽  
Electrochemical Study ◽  
Scavenging Activity ◽  
Reduction Reactions ◽  
Oxidation Reduction ◽  
Nitrogen Reactive Species

The biocompatibility of TiO2 is due to the activity that it shown in front of oxygen and nitrogen reactive species. Some authors suggest that the mechanism go through oxidation reduction reactions where changes of oxidation state in the Titanium and phases are involve. For this reason, Anderson-Magnelli phases could present scavenging activity. Moreover, these materials are use as electrodes and in that way are proposed as electrodes for study their scavenging mechanism by electrochemical methods.

Synthesis, photophysical and electrochemical properties of a new class of fluorescent amidoanthracenophanes

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73951-73957
Author(s):  
Ayyavoo Kannan ◽  
Perumal Rajakumar
Keyword(s):  
Electrochemical Properties ◽  
Electrochemical Oxidation ◽  
Fluorescence Emission ◽  
New Class ◽  
Intense Fluorescence ◽  
Oxidation Reduction

The synthesized amidoanthracenophanes1–4exhibit intense fluorescence emission and electrochemical oxidation reduction characteristic of a flourophoric unit.

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