STUDY OF CHARGE-TRANSFER COMPLEXES BETWEEN IODINE AND SOME ANTIDEPRESSANTS

Document Type : Original Article

Authors

Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt

Abstract

Molecular interactions between iodine and various antidepressants are investigated by UV/Vis spectroscopy. Iodine is found to form charge-transfer complexes (CTC) of n-type with these molecules. Beer's law is obeyed in the concentration range 0.5-30 mg/ml for the studied compounds. The values for the formation constants Kc of these iodinated complexes indicate a strong donor-acceptor interaction. These drugs can, therefore, be expected to interfere with thyroid metabolism. In addition, a good correlation between log € and some antidepressant parameters is found.