fulltext.study @t Gmail

Photoreactivity differences of [CrIII(N–N)3]3+ and [CrIII(N–N)2RCl]2+ complex ions in aquo-methanol/1,4-dioxane binary mixtures

Paper ID Volume ID Publish Year Pages File Format Full-Text
28697 44086 2006 9 PDF Available
Title
Photoreactivity differences of [CrIII(N–N)3]3+ and [CrIII(N–N)2RCl]2+ complex ions in aquo-methanol/1,4-dioxane binary mixtures
Abstract

Photoaquation of [CrIII(N–N)3]3+ ((N–N) = en, pn and tn) and [CrIII(N–N)2RCl]2+ (R = C6H5NH2, o-MeC6H4NH2 and p-MeC6H4NH2) complexes in water/methanol (MeOH) and water/1,4-dioxane (Diox) binary solutions (composition: water/methanol (1,4-dioxane) are 20/0, 19/1, 18/2, 17/3,16/4, 15/5, 14/6, v/v) have been followed and quantum yields were estimated. The measured photoefficiencies vary linearly with molefraction, x2, of cosolvent and Φ is found to either increase or decrease. It is determined to attain an upper limit regularly or a lower limit as the x2: xMeOH/xDiox of the medium is increased from 0.0229/0.019 to 0.1602/0.0831. The nature of solvation has notable effects on Φ describing a logarithmic relationship to between quantum yield and empirical solvent scales like ɛr, Y, ETN, DNN, α, β and π*. A correlation equation of the form YS=Y0+∑n=1∞aiXi is useful in understanding the role of solvent in terms of both qualitative and quantitative manner. The unprecedented change in quantum yield and the influence of solvent as a mediating agent are discussed.

Keywords
Photochemistry of alkyl amine-chromium(III); Chromium(III)-arylamine photoreactions; Mixed solvent effect; Correlation analysis
First Page Preview
Photoreactivity differences of [CrIII(N–N)3]3+ and [CrIII(N–N)2RCl]2+ complex ions in aquo-methanol/1,4-dioxane binary mixtures
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 182, Issue 2, 31 August 2006, Pages 128–136
Authors
, ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us