SYNTHESIS AND IDENTIFICATION OF SOME HYDROXAMIC DERIVATIVES AND STUDYING THEIR THERMO AND PHOTO DEGRADATION | ||
| Journal of University of Anbar for Pure Science | ||
| Article 18, Volume 8, Issue 2, August 2014, Pages 58-66 | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2014.123981 | ||
| Authors | ||
| ISMAIL AL-KHATEEB1; SADDA ABEDULLAH2; SLMAN AHMED3 | ||
| 1College of Science, University of Anbar | ||
| 2Collage of Education for Women- University of Anbar | ||
| 3Al-Nahrain University - College of Science | ||
| Abstract | ||
| The aim of this research is to prepare and study the kinetics effect of temperature and photochemical reactions of the hydroxamic acid derivatives of diethyl succinate through the interaction of alkyl halides and diethyl succinate in the presence of strong base. The transformation of ester to hydroxamic acid derivatives by the direct interaction between the ester hydroxyl amine hydrochloride in the presence of sodium hydroxide. Identification of the prepared compounds by determination of molecular weights and melting points . In addition to I.R and U.V spectroscopic absorption of the prepared compounds . Effect of temperature on the dissociation constant of hydroxamic acids derivatives in aqueous solutions. Ionic conductivity of these solutions were measured at different temperatures. It is found that the value of the dissociation constant of hydroxamic acid derivatives increase with temperature. The effect of radiation on the dissociation constant of hydroxamic acid derivatives through the preparation of series of solutions . Then these solutions were exposed to radiation at the wave length (λ=254nm), then the ionic conductivity was measured at different times and the dissociation constant (Ka, pK) was determined. It is found that dissociation constant increased with will time increment . | ||
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