ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Mixed Ligand Complexes of Fe(III), Co(II), Ni(II), and Cu(II) with 3-Acetyl-4-hydroxy-6-methyl-2-pyrone and l,3,4-Thiadiazole-2,5-dithiol

M. A. El-Gurashi

Department of Chemistry, Faculty of Applied Sciences, Umm El-Qura University, Makkah, K.S.A.

Abstract: The binary complexes of Fe(III), Co(II), Ni(II), and Cu(II) with 3-acetyl-4-hydroxy-6-methyl-2-pyrone (Hdha) react readily with 1,3,4-thiadiazole-2,5-dithiol (Htddt) affording dithiolato mixed ligand complexes of the types [Fe(dha)₂(Htddt)] and [M(dha)(Htddt)(tddt)], where M = Co, Ni or Cu, by the substitution of one Hdha molecule by two Htddt ligands. The prepared complexes were characterized by elemental analysis, electronic and IR spectra as well as TGA and conductivity measurements. Distorted octahedral or square planar geometry was suggested for the mixed ligand complexes. It is observed that some of the thiolato complexes are more potent as bacteriostatic agents than the parent binary complexes.

Full paper in Portable Document Format: 551a32.pdf

Chemical Papers 55 (1) 32–36 (2001)