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Thermodynamic and theoretical studies of average ionization constants of a number of phenolic schiff bases derived from salicylaldehyde by conductivity measurements
Joint Authors
Uthman, Shadha
al-Tai, Fida H. M.
al-Hyali, Imad A. S.
Source
al-Tarbiyah wa-al-Ilm : Majallat ilmiyah lil-Buhuth al-Ilmiyah al-Asasiyah
Issue
Vol. 27, Issue 3 (30 Sep. 2018), pp.1-25, 25 p.
Publisher
University of Mosul College of Education for Pure Science
Publication Date
2018-09-30
Country of Publication
Iraq
No. of Pages
25
Main Subjects
Abstract EN
In this work, three Schiff bases carrying acidic phenolic groups were synthesized derived from the reaction of salicylaldehyde with o,m, and p-amino phenols.
A number of their physical and structural properties were determined by IR, UV spectra and melting points.
The ionization constants of the synthesized Schiff bases were calculated at different temperatures by conductivity measurements.
The effect of varying position of OH group with respect to the imine group on ionization constant was investigated.
Depending on the results of varying temperatures, the thermodynamic functions of ionization were estimated.
The study also concerned with the calculation of a number of theoretical parameters by employing the semiempirrcal Austin method 1 (AM1) including the atomic charges present on the hetro atoms in the molecules, in addition to some energetical and structural parameters.
The determined parameters were correlated to the variation of ionization constants of the synthesized imines.
Explanation and support for the experimental results were provides by these calculations.
The overall results proved that, the ionization constant is affected by inductive, resonance, steric and by hydrogen bonding, and can be determined simply, precisely and accurately by conductivity measurements .
American Psychological Association (APA)
al-Hyali, Imad A. S.& al-Tai, Fida H. M.& Uthman, Shadha. 2018. Thermodynamic and theoretical studies of average ionization constants of a number of phenolic schiff bases derived from salicylaldehyde by conductivity measurements. al-Tarbiyah wa-al-Ilm : Majallat ilmiyah lil-Buhuth al-Ilmiyah al-Asasiyah،Vol. 27, no. 3, pp.1-25.
https://search.emarefa.net/detail/BIM-899666
Modern Language Association (MLA)
al-Hyali, Imad A. S.…[et al.]. Thermodynamic and theoretical studies of average ionization constants of a number of phenolic schiff bases derived from salicylaldehyde by conductivity measurements. al-Tarbiyah wa-al-Ilm : Majallat ilmiyah lil-Buhuth al-Ilmiyah al-Asasiyah Vol. 27, no. 3 (2018), pp.1-25.
https://search.emarefa.net/detail/BIM-899666
American Medical Association (AMA)
al-Hyali, Imad A. S.& al-Tai, Fida H. M.& Uthman, Shadha. Thermodynamic and theoretical studies of average ionization constants of a number of phenolic schiff bases derived from salicylaldehyde by conductivity measurements. al-Tarbiyah wa-al-Ilm : Majallat ilmiyah lil-Buhuth al-Ilmiyah al-Asasiyah. 2018. Vol. 27, no. 3, pp.1-25.
https://search.emarefa.net/detail/BIM-899666
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 24-25
Record ID
BIM-899666