scholarly journals Rigidification of a macrocyclic tris-catecholate scaffold leads to electronic localisation of its mixed valent redox product

2019 ◽  
Vol 55 (16) ◽  
pp. 2281-2284
Author(s):  
Sam Greatorex ◽  
Kevin B. Vincent ◽  
Amgalanbaatar Baldansuren ◽  
Eric J. L. McInnes ◽  
Nathan J. Patmore ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Class Ii ◽  
Radical Product ◽  
Mixed Valency ◽  
Intervalence Charge Transfer

One-electron oxidation of the compound shown shows no evidence for intervalence charge transfer in the macrocylic ligand radical product. In contrast, related [{Pt(L)}3(μ3-ctc˙)]+ (H6ctc = cyclotricatechylene), exhibits class II mixed valency.

Optically probing the localized to delocalized transition in Mo2–Mo2 mixed-valence systems

2017 ◽  
Vol 53 (21) ◽  
pp. 3030-3033 ◽  
Author(s):  
Yi Yang Wu ◽  
Miao Meng ◽  
Gang Yi Wang ◽  
Pengju Feng ◽  
Chun Y. Liu
Keyword(s):  
Charge Transfer ◽  
Absorption Band ◽  
Energy Intensity ◽  
Mixed Valence ◽  
Class Ii ◽  
Class Iii ◽  
Spectral Parameters ◽  
Band Energy ◽  
Charge Transfer Absorption Band ◽  
Intervalence Charge Transfer

A transition of mixed-valence systems from Class II to Class III crossing the Class II–III borderline is achieved by four thienylene-bridged Mo2 dimers, and is probed using spectral parameters of intervalence charge transfer absorption (band energy, intensity and shape). This study offers fresh and detailed observations of optical behaviors of MV compounds in different regimes.

scholarly journals Small anion-assisted electrochemical potential splitting in a new series of bistriarylamine derivatives: organic mixed valency across a urea bridge and zwitterionization

2019 ◽  
Vol 15 ◽  
pp. 2277-2286
Author(s):  
Keishiro Tahara ◽  
Tetsufumi Nakakita ◽  
Alyona A Starikova ◽  
Takashi Ikeda ◽  
Masaaki Abe ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Charge Transfer ◽  
Electrochemical Behavior ◽  
Mixed Valence ◽  
Electrochemical Potential ◽  
Electronic Interactions ◽  
Mixed Valency ◽  
Transfer Characteristics ◽  
Intervalence Charge Transfer

We report the synthesis of a new bistriarylamine series having a urea bridge and investigate its mixed-valence (MV) states by electrochemical and spectroelectrochemical methods. We found that the supporting electrolytes had unusual effects on potential splitting during electrochemical behavior, in which a smaller counteranion thermodynamically stabilized a MV cation more substantially than did a bulky one. The effects contrary to those reported in conventional MV systems were explained by zwitterionization through hydrogen bonding between the urea bridge and the counteranions, increasing the electronic interactions between two triarylamino units. Furthermore, we clarified the intervalence charge transfer characteristics of the zwitterionic MV state.

Proton-Coupled Intervalence Charge Transfer: Concerted Processes

2012 ◽  
Vol 134 (4) ◽  
pp. 1906-1909 ◽  
Author(s):  
Ramachandran Balasubramanian ◽  
Geneviève Blondin ◽  
Juan Carlos Canales ◽  
Cyrille Costentin ◽  
Jean-Marc Latour ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intervalence Charge Transfer ◽  
Concerted Processes

scholarly journals Photo-Gated Intervalence Charge Transfer of Ethynylferrocene Functionalized Titanium Dioxide Nanoparticles

2016 ◽  
Vol 211 ◽  
pp. 704-710 ◽  
Author(s):  
Yi Peng ◽  
Jia En Lu ◽  
Christopher P. Deming ◽  
Limei Chen ◽  
Nan Wang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Charge Transfer ◽  
Titanium Dioxide Nanoparticles ◽  
Intervalence Charge Transfer
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