Effects of cations upon absorption spectra. Part 5.—Charge-transfer-to-solvent spectrum of iodide and ion-pair formation

1970 ◽  
Vol 66 (0) ◽  
pp. 1563-1573 ◽  
Author(s):  
T. R. Griffiths ◽  
R. H. Wijayanayake
Keyword(s):  
Charge Transfer ◽  
Absorption Spectra ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation

Charge-transfer stabilization of molecular bicimers: ion pair formation in diarylmethanes

1988 ◽  
Vol 92 (7) ◽  
pp. 1703-1705 ◽  
Author(s):  
R. J. Locke ◽  
Steve H. Modiano ◽  
E. C. Lim
Keyword(s):  
Charge Transfer ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation

scholarly journals Ion-Pair Formation of [CoIII(pn)2(Cl)(L)2+····· I−] by Aqueous-Organic Solvent Medium Enhanced Photoreduction: A Perspective Regression Analysis

2020 ◽  
Vol 32 (6) ◽  
pp. 1379-1383
Author(s):  
L. Devaraj Stephen ◽  
S.G. Gunasekaran ◽  
M. Soundarrajan
Keyword(s):  
Charge Transfer ◽  
Organic Solvent ◽  
High Performance ◽  
Ion Pair ◽  
Pair Formation ◽  
The Novel ◽  
Solvent Medium ◽  
Ion Pair Formation ◽  
Iodide Ion

Reduction of CoIII centre in CoIII(pn)2(Cl)(L)2+ with reference to solvent medium and structure of the complex via ion pair charge transfer (IPCT) paves way for the novel reaction mechanism route. In this work, we prepared, characterized and photoinduced the complexes CoIII(pn)2(Cl)(L)2+ (where L = RC6H4NH2, R = m-OMe, p-F and H) in the presence of iodide ion. Quantum yield for 254 nm excitation of CoIII(pn)2(Cl)(L)2+(where L = RC6H4NH2, R = m-OMe, p-F and H) in water-1,4-dioxane mixtures (Diox = 0, 5, 10, 15, 20, 25, and 30% (v/v)) were also derived for all the complexes in presence of added iodide ion, in which CoIII was reduced via [CoIII(pn)2(Cl)(L)2+….. I-] ion-pair formation. The photoinduced state is ion-pair charge transfer transition state and the quantum efficiency is solvent reliant and they are non-reactive. That is, change in ΦCo(II) is dependable with observed increase in xDiox of the mixed solvent medium. Correlation analysis using empirical parameters εr, Y, ET N and DNN provides a model to understand the solvent medium participation and interaction. This work gains an insight into the role of aqueous-organic solvent medium in CoIII(pn)2(Cl)(L)2+ photoreduction, which may be of great significance in developing novel approaches in the field of high performance catalysis

Extraction of organic acids by ion-pair formation with tri-n-octylamine

1985 ◽  
Vol 178 ◽  
pp. 189-195 ◽  
Author(s):  
M. Puttemans ◽  
L. Dryon ◽  
D.L. Massart
Keyword(s):  
Organic Acids ◽  
Ion Pair ◽  
Pair Formation ◽  
Ion Pair Formation
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