The effect of redox-active cyanomanganese(I) ligands on intramolecular electron transfer to, and alkyne alignment in, M(CO)(RCCR)Tp′ (M = Mo or W) units

2009 ◽  
pp. 3062 ◽  
Author(s):  
Christopher J. Adams ◽  
Neil G. Connelly ◽  
Sriwipha Onganusorn
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Redox Active

scholarly journals The Influence of Secondary Structure on Electron Transfer in Peptides

2013 ◽  
Vol 66 (8) ◽  
pp. 848 ◽  
Author(s):  
Jingxian Yu ◽  
John R. Horsley ◽  
Andrew D. Abell
Keyword(s):  
Electron Transfer ◽  
Secondary Structure ◽  
Chain Length ◽  
Intramolecular Hydrogen Bonding ◽  
Electrochemical Analysis ◽  
Helical Conformation ◽  
Intramolecular Electron Transfer ◽  
Helical Structures ◽  
Redox Active ◽  
Intramolecular Hydrogen

A series of synthetic peptides containing 0–5 α-aminoisobutyric acid (Aib) residues and a C-terminal redox-active ferrocene was synthesised and their conformations defined by NMR and circular dichroism. Each peptide was separately attached to an electrode for subsequent electrochemical analysis in order to investigate the effect of peptide chain length (distance dependence) and secondary structure on the mechanism of intramolecular electron transfer. While the shorter peptides (0–2 residues) do not adopt a well defined secondary structure, the longer peptides (3–5 residues) adopt a helical conformation, with associated intramolecular hydrogen bonding. The electrochemical results on these peptides clearly revealed a transition in the mechanism of intramolecular electron transfer on transitioning from the ill-defined shorter peptides to the longer helical peptides. The helical structures undergo electron transfer via a hopping mechanism, while the shorter ill-defined structures proceeded via an electron superexchange mechanism. Computational studies on two β-peptides PCB-(β3Val-β3Ala-β3Leu)n–NHC(CH3)2OOtBu (n = 1 and 2; PCB = p-cyanobenzamide) were consistent with these observations, where the n = 2 peptide adopts a helical conformation and the n = 1 peptide an ill-defined structure. These combined studies suggest that the mechanism of electron transfer is defined by the extent of secondary structure, rather than merely chain length as is commonly accepted.

Actinide Redox-Active Ligand Complexes: Reversible Intramolecular Electron-Transfer in U(dpp-BIAN)2/U(dpp-BIAN)2(THF)

2010 ◽  
Vol 49 (3) ◽  
pp. 924-933 ◽  
Author(s):  
Eric J. Schelter ◽  
Ruilian Wu ◽  
Brian L. Scott ◽  
Joe D. Thompson ◽  
Thibault Cantat ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

Inter- and Intramolecular Electron Transfer in Copper Complexes: Electronic Entatic State with Redox-Active Guanidine Ligands

2017 ◽  
Vol 23 (55) ◽  
pp. 13607-13611 ◽  
Author(s):  
David F. Schrempp ◽  
Simone Leingang ◽  
Martin Schnurr ◽  
Elisabeth Kaifer ◽  
Hubert Wadepohl ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Copper Complexes ◽  
Intramolecular Electron Transfer ◽  
Entatic State ◽  
Redox Active

Enhancement of Oxidative Reaction by the Intramolecular Electron Transfer between the Coordinated Redox-Active Metal Ions in SOD1

2020 ◽  
Vol 124 (11) ◽  
pp. 2116-2123
Author(s):  
Takumi Ohyama ◽  
Kunisato Kuroi ◽  
Taiyu Wakabayashi ◽  
Nobuhiro Fujimaki ◽  
Takakazu Nakabayashi
Keyword(s):  
Electron Transfer ◽  
Metal Ions ◽  
Intramolecular Electron Transfer ◽  
Oxidative Reaction ◽  
Redox Active ◽  
Active Metal ◽  
Redox Active Metal

scholarly journals Hydrogenase biomimics containing redox-active ligands: Fe2(CO)4(μ-edt)(κ2-bpcd) with electron-acceptor 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) as a potential [Fe4–S4]H surrogate

2019 ◽  
Vol 48 (18) ◽  
pp. 6051-6060 ◽  
Author(s):  
Shishir Ghosh ◽  
Nathan Hollingsworth ◽  
Mark Warren ◽  
David A. Hrovat ◽  
Michael G. Richmond ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electron Acceptor ◽  
Intramolecular Electron Transfer ◽  
Redox Active Ligands ◽  
Redox Active

The diiron centre and redox-active diphosphine are reduced in separate steps but there is little evidence of intramolecular electron transfer between the two.

Intramolecular Electron Transfer Mediated by a Tetrathiafulvalene Bridge in a Purely Organic Mixed-Valence System

2003 ◽  
Vol 42 (24) ◽  
pp. 2765-2768 ◽  
Author(s):  
Nicolas Gautier ◽  
Frédéric Dumur ◽  
Vega Lloveras ◽  
José Vidal-Gancedo ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mixed Valence ◽  
Intramolecular Electron Transfer
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