THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES
Aly, A., Osman, A., Abo El-Maali, N., Al-Hazmi, G. (2005). THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES. EKB Journal Management System, 28(2), 269-276. doi: 10.21608/bfsa.2005.65403
A. A. M. Aly; A. H. Osman; N. Abo El-Maali; G. A. A. Al-Hazmi. "THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES". EKB Journal Management System, 28, 2, 2005, 269-276. doi: 10.21608/bfsa.2005.65403
Aly, A., Osman, A., Abo El-Maali, N., Al-Hazmi, G. (2005). 'THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES', EKB Journal Management System, 28(2), pp. 269-276. doi: 10.21608/bfsa.2005.65403
Aly, A., Osman, A., Abo El-Maali, N., Al-Hazmi, G. THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES. EKB Journal Management System, 2005; 28(2): 269-276. doi: 10.21608/bfsa.2005.65403

THERMAL DECOMPOSITION OF TETRACYCLINE AND CEPHALOSPORINS METAL COMPLEXES

Bulletin of Pharmaceutical Sciences Assiut University
Article 13, Volume 28, Issue 2, December 2005, Page 269-276  XML PDF (1.02 MB)
Document Type: Original Article
DOI: 10.21608/bfsa.2005.65403
View on SCiNiTO View on SCiNiTO
Authors
A. A. M. Aly; A. H. Osman; N. Abo El-Maali; G. A. A. Al-Hazmi
Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt
Abstract
Thermal behaviour of tetracycline hydrochloride, oxytetracycline dihydrate, Co(II) and Ni(II) complexes of tetracycline and Zn(II) complexes of some cephalosporin antibiotics, namely cephalexin, cephapirin, cefuroxime, and ceftazidime was studied using thermogravimetric analysis (TG). The TG curves exhibit several thermal events indicating that the thermal decomposition of these compounds are not simple. The kinetic parameters for steps appropriate for kinetic analysis were evaluated making use of the Coats-Redfern equation. During the thermal decomposition of tetracycline hydrochloride anhydrotetracycline was proposed to be formed as an intermediate due to the elimination of water.
Statistics
Article View: 133
PDF Download: 305