NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.45 [2007] >
IJPAP Vol.45(03) [March 2007]  >


Title: Ultrasonic studies on charge transfer complexes of certain aldehydes with benzylamine and cyclohexylamine as donors in n-hexane at 303K
Authors: Kannappan, V
Gandhi, N Indra
Keywords: Charge transfer complexes
Aldehydes
Primary amines
Stability constant
Ultrasonic method
Issue Date: Mar-2007
Publisher: CSIR
IPC CodeB01J19/10
Abstract: The ultrasonic velocities (U), densities (ρ), and viscosities (η) were measured for solutions containing equimolar concentrations of eight aldehydes namely, benzaldehyde, o-chlorobenzaldehyde, anisaldehyde, p-tolualdehyde, cinnamaldehyde, crotonaldehyde, propionaldehyde, and valeraldehyde as acceptors, benzylamine and cyclohexylamine as donors in n-hexane at 303K. Acoustical parameters such as adiabatic compressibility (β), free length (Lf), viscous relaxation time (ґ), molecular interaction parameter (χu) have been computed. These values indicate the formation of charge transfer complexes between aldehydes and amines. Formation constant (K) values of the complexes have been evaluated using a modified Bhat equation proposed by Kannappan. The constant values of free energy of activation (ΔG#) and relaxation time indicate the formation of similar type of complexes in these systems. However, the variation in free energy of formation (ΔG) values suggests that their thermodynamic stability depends on the structure of donor and acceptor.
Page(s): 221-225
ISSN: 0019-5596
Source:IJPAP Vol.45(03) [March 2007]

Files in This Item:

File Description SizeFormat
IJPAP 45(3) 221-225.pdf269.59 kBAdobe PDFView/Open
 Current Page Visits: 842 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 644853 since 06-Feb-2009  Last updated on 26-Dec-2014Webmaster: nopr@niscair.res.in