Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5055
Title: Effects of molecular association on mutual diffusion : a study of hydrogen bonding in dilute solutions
Authors: Lu, JG
Kong, R
Chan, TC
Keywords: Solutions
Association
Diffusion
Solvation
Issue Date: 8-Feb-1999
Publisher: American Institute of Physics
Source: Journal of chemical physics, 8 Feb. 1999, v. 110, no. 6, p. 3003-3008 How to cite?
Journal: Journal of chemical physics 
Abstract: Diffusivities of pseudoplanar molecules at trace concentration in methanol have been measured at 298.2 K using Taylor’s dispersion method. The data of the polar and nonpolar aromatic solutes are compared, and the effects due to solute–solvent interactions on diffusion, together with the solvation numbers, are determined. In this study, the effects are combined with the recently developed solute hydrogen-bond scales to unravel hydrogen bonding between solute and solvent. It is found that the degrees of association of the solutes with methanol decrease in the sequence hydroquinone > aromatic acids > phenols > aromatic amines > aprotic aromatic compounds. Except for o-nitrophenol, which is capable of intramolecular hydrogen bonding, all aromatic acids, phenols, and amines studied behave more as hydrogen-bond donor than acceptor in methanol. The present work also indicates that motions of associated molecules can be understood in terms of the molecular behavior of nonassociated solutes and the hydrogen-bond acidity/basicity of polar solutes.
URI: http://hdl.handle.net/10397/5055
ISSN: 1089-7690 (online)
0021-9606 (print)
DOI: 10.1063/1.477895
Rights: © 1999 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. G. Lu, R. Kong & T. C. Chan, J. Chem. Phys. 110, 3003 (1999) and may be found at http://link.aip.org/link/?jcp/110/3003.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Lu_Effects_molecular_association.pdf717.05 kBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

21
Last Week
0
Last month
1
Citations as of Jun 4, 2016

WEB OF SCIENCETM
Citations

20
Last Week
0
Last month
1
Citations as of Jul 24, 2016

Page view(s)

175
Last Week
0
Last month
Checked on Jul 24, 2016

Download(s)

174
Checked on Jul 24, 2016

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.