Cover Image

A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.

The equilibrium constants and thermodynamic parameters for complexation process between titanium (III) cation and meso-octamethylcalix[4]pyrrole were determined by conductivity measurements in acetonitrile–ethanol (AN–EtOH) binary mixture at different temperatures. The conductance data show that the...

Full description

Saved in:
Bibliographic Details
Main Authors: Ahmadzadeh, Saeid, Kassim, Anuar, Rezayi, Majid, Abdollahi, Yadollah, Rounaghi, Gholam Hossein
Format: Article
Language:English
English
Published: Electrochemical Science Group 2011
Online Access:http://psasir.upm.edu.my/id/eprint/24637/1/A%20conductometric%20study%20of%20complexation%20reaction%20between%20meso.pdf
http://psasir.upm.edu.my/id/eprint/24637/
http://www.electrochemsci.org/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.upm.eprints.24637
record_format eprints
spelling my.upm.eprints.246372015-10-21T06:54:45Z http://psasir.upm.edu.my/id/eprint/24637/ A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures. Ahmadzadeh, Saeid Kassim, Anuar Rezayi, Majid Abdollahi, Yadollah Rounaghi, Gholam Hossein The equilibrium constants and thermodynamic parameters for complexation process between titanium (III) cation and meso-octamethylcalix[4]pyrrole were determined by conductivity measurements in acetonitrile–ethanol (AN–EtOH) binary mixture at different temperatures. The conductance data show that the stoichiometry of the (meso-octamethylcalix[4]pyrrole.[Ti(OH)-(H2O)5])2+ complex in all binary mixed solvents is 1:1[I:M]. The stability of the formed complex is sensitive to the solvent composition and a non-linear behavior was observed for changes of log Kf of this complex versus the composition of the binary mixed solvents. The values of thermodynamic parameters (Hc and Sc) for formation of (meso-octamethylcalix[4]pyrrole.[Ti(OH)-(H2O)5])2+ complex were obtained from temperature dependence of the stability constant using van’t Hoff plots. The obtained results show that the formed complex is enthalpy destabilized, but entropy stabilized and a non-monotonic behavior was observed for variations of standard enthalpy and entropy changes versus the composition of the binary mixed solvents. Electrochemical Science Group 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24637/1/A%20conductometric%20study%20of%20complexation%20reaction%20between%20meso.pdf Ahmadzadeh, Saeid and Kassim, Anuar and Rezayi, Majid and Abdollahi, Yadollah and Rounaghi, Gholam Hossein (2011) A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures. International Journal of Electrochemical Science, 6 (-). pp. 4749-4759. ISSN 1452-3981 http://www.electrochemsci.org/ English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The equilibrium constants and thermodynamic parameters for complexation process between titanium (III) cation and meso-octamethylcalix[4]pyrrole were determined by conductivity measurements in acetonitrile–ethanol (AN–EtOH) binary mixture at different temperatures. The conductance data show that the stoichiometry of the (meso-octamethylcalix[4]pyrrole.[Ti(OH)-(H2O)5])2+ complex in all binary mixed solvents is 1:1[I:M]. The stability of the formed complex is sensitive to the solvent composition and a non-linear behavior was observed for changes of log Kf of this complex versus the composition of the binary mixed solvents. The values of thermodynamic parameters (Hc and Sc) for formation of (meso-octamethylcalix[4]pyrrole.[Ti(OH)-(H2O)5])2+ complex were obtained from temperature dependence of the stability constant using van’t Hoff plots. The obtained results show that the formed complex is enthalpy destabilized, but entropy stabilized and a non-monotonic behavior was observed for variations of standard enthalpy and entropy changes versus the composition of the binary mixed solvents.
format Article
author Ahmadzadeh, Saeid
Kassim, Anuar
Rezayi, Majid
Abdollahi, Yadollah
Rounaghi, Gholam Hossein
spellingShingle Ahmadzadeh, Saeid
Kassim, Anuar
Rezayi, Majid
Abdollahi, Yadollah
Rounaghi, Gholam Hossein
A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
author_facet Ahmadzadeh, Saeid
Kassim, Anuar
Rezayi, Majid
Abdollahi, Yadollah
Rounaghi, Gholam Hossein
author_sort Ahmadzadeh, Saeid
title A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
title_short A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
title_full A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
title_fullStr A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
title_full_unstemmed A conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
title_sort conductometric study of complexation reaction between meso-octamethylcalix[4]pyrrole with titanium cation in acetonitrile-ethanol binary mixtures.
publisher Electrochemical Science Group
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/24637/1/A%20conductometric%20study%20of%20complexation%20reaction%20between%20meso.pdf
http://psasir.upm.edu.my/id/eprint/24637/
http://www.electrochemsci.org/
_version_ 1643828420916805632
score 13.211869

Similar Items