Inclusion Complexation of Benzyl Viologen by β-Cyclodextrin in DMF-H2O Mixed Solution

  • Iftikhar Imam Naqvi Department of Chemistry, University of Karachi- 75270, Karachi, Pakistan
  • Shazia Perveen Department of Chemistry, University of Karachi- 75270, Karachi, Pakistan

Abstract

Complex formation between benzyl viologen and β-Cyclodextrin (βCD) in 9:1(v/v) DMF-H2O mixed solution was studied by cyclic voltammetry. In order to examine the probable mechanism of the reaction of benzyl viologen dication (BzV2+) and its reduced forms with βCD, cyclic voltammograms were digitally simulated. Detailed analysis of the mechanism by digital simulation revealed that in 9:1(v/v) DMF-H2O mixed solution, benzyl viologen mono-cation         (BzV+∙) formed inclusion complex with βCD according to EC mechanism, while its fully reduced form (BzV°), could not form inclusion complex with βCD. Bonding equilibrium constant, Keq, pertaining to the bonding of BzV+∙ with βCD was estimated as 10.6 M-n. The second order rate constant for the reaction of BzV+∙ with βCD was determined as 4.93 M-nS-. By the use of this solvent system (9:1(v/v) DMF- H2O mixed solution) the comprehensive study of non-alkyl group substituted viologens and long alkyl chain viologens with βCD is possible

Published
Jun 1, 2016
How to Cite
NAQVI, Iftikhar Imam; PERVEEN, Shazia. Inclusion Complexation of Benzyl Viologen by β-Cyclodextrin in DMF-H2O Mixed Solution. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 17, n. 1, p. 7, june 2016. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/45>. Date accessed: 19 jan. 2021.
Citation Formats
Issue
Vol 17 No 1 (2016): Pakistan Journal of Analytical & Environmental Chemistry
Section
Research Articles

Submission of a manuscript to the Journal will be taken to imply that:

  1. The work is original and has not been previously published (except in the form of an abstract or a part of a published lecture, review or thesis).
  2. It is not being considered for publication elsewhere, and
  3. If accepted for publication, it will NOT be published commercially elsewhere in the same form, in any language, without the consent of Editor or Publisher.