Next Article in Journal
DNA-Templated Preparation of Gold Nanoparticles
Previous Article in Journal
Antiphytoviral Activity of Sesquiterpene-Rich Essential Oils from Four Croatian Teucrium Species
Article Menu

Article Versions

Export Article

Open AccessArticle
Molecules 2011, 16(9), 8130-8142; doi:10.3390/molecules16098130

Thermodynamic Study of the Complexation of p-Isopropylcalix[6]arene with Cs+ Cation in Dimethylsulfoxide-Acetonitrile Binary Media

1
Department of Chemistry, Faculty of Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2
Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
*
Author to whom correspondence should be addressed.
Received: 28 June 2011 / Revised: 26 August 2011 / Accepted: 26 August 2011 / Published: 22 September 2011
Download PDF [515 KB, uploaded 18 June 2014]

Abstract

The complexation reactions between the macrocyclic ionophore, p-isopropylcalix[6]arene and Cs+ cation were studied in dimethylsulfoxide–acetonitrile (DMSO-AN) binary non-aqueous solvents at different temperatures using a conductometry method. The conductance data show that the stoichiometry of the (p-isopropylcalix[6]-arene·Cs)+ complex in all binary mixed solvents is 1:1. The stability of the complexes is affected by the composition of the binary solvent media and a non-linear behavior was observed for changes of log Kf of the complex versus the composition of the binary mixed solvents. The thermodynamic parameters (Dc and Dc) for formation of (p-isopropyl-calix[6]arene·Cs)+ complex were obtained from temperature dependence of the stability constant and the obtained results show that the (p-isopropylcalix[6]arene·Cs)+ complex is enthalpy destabilized, but entropy stabilized, and the values of the mentioned parameters are affected strongly by the nature and composition of the binary mixed solvents.
Keywords: conductometry; dimethylsulfoxide–acetonitrile binary media; p-isopropylcalix-[6]arene; Cs+ cation conductometry; dimethylsulfoxide–acetonitrile binary media; p-isopropylcalix-[6]arene; Cs+ cation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ahmadzadeh, S.; Kassim, A.; Rezayi, M.; Rounaghi, G.H. Thermodynamic Study of the Complexation of p-Isopropylcalix[6]arene with Cs+ Cation in Dimethylsulfoxide-Acetonitrile Binary Media. Molecules 2011, 16, 8130-8142.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top