Ariffin, Azhar and Khan, M.N. and Damit, E.F. and Yusof, N.S.M. (2012) Effects of pure Acoh and mixed AcOH-CS (CS = CH3CN And THF) solvents on the rate of cleavage of Phthalic Anhydride (PAn). Journal of the Iranian Chemical Society, 9 (5). pp. 723-727. ISSN 1735-207X, DOI https://doi.org/10.1007/s13738-012-0084-5.
Full text not available from this repository.Abstract
The values of pseudo-first-order rate constants (k (obs)) for the acetolysis of phthalic anhydride (PAn) increase from 6.60 x 10(-7) to 31.5 x 10(-7) s(-1) with the increase in temperature from 30 to 50 A degrees C. These values of k (obs) give activation parameters a dagger H* and a dagger S* as 14.4 +/- A 0.4 kcal mol(-1) and -39.1 +/- A 1.3 cal K-1 mol(-1), respectively. The values of k (obs) remain essentially unchanged with the increase in the content of CS (CS = CH3CN or THF) from 0 to 40 % v/v in mixed AcOH-CS solvents. These observations have been explained qualitatively.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Additional Information: | Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA |
| Uncontrolled Keywords: | Phthalic anhydride (PAn); Rate of acetolysis of PAn; Kinetic study ∆H* and ∆S* for acetolysis; Effects of mixed glacial acetic acid–CS solvents (CS = CH3CN and THF) |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Miss Malisa Diana |
| Date Deposited: | 03 Jul 2013 04:10 |
| Last Modified: | 27 Aug 2019 06:21 |
| URI: | http://eprints.um.edu.my/id/eprint/8095 |
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