Browsing by Author "Chimdi, Achalu"

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    Studies on Transition Metal Complexes of S-Triazine Derivatives
    (2005-03) Chimdi, Achalu; Retta, Negussie (Professor)
    In this project two ligands 2,4,6-tris(hydroxylamino)-s-triazine (THASTZ) and 2,4,6- tris (hydrazino)-s-triazine (THSTZ) were synthesized. Suspension of THASTZ in methanol and THSTZ in acetonitrile was used to synthesize metal complexes of VO(II), Ag(I), Cu(I), Cd(II) and Hg(II) They have been characterized on the basis of analytical, thermal (DSC-TGA), magnetic susceptibility, conductance, IR, NMR, UV-VIS spectral studies. The conductivity measurement studies show that the metal complexes are non-electrolytes and the chlorides (no chlorides in Ag (I) and VO (II) complexes) are coordinated in the inner sphere of the metal complexes. Except in DMSO both ligands (THASTZ and THSTZ) are insoluble in most common solvents unless heated. For both ligands (except for Ag (I) complex, which is 3:1 ratio) the metal to ligand ratio in the complexes is 1:1. The data shows that Hg (II) and Cd (II) complexes form octahedral while VO (II) form distorted octahedral complexes, where as Ag (I) and Cu (I) show tetrahedral geometry. All data have confirmed the formation of THASTZ, THSTZ and their corresponding metal complexes. Antimicrobial activity tests against salmonella typhi and staphlococus aureus of THASTZ, THSTZ and their corresponding metal complexes have been investigated. The result shows that 2,4,6-tris (hydrazino)-s-triazine was found inactive against salmonella typhi; where as 2,4,6-tris (hydroxyl amino)-s-triazine was inactive against both bacteria. Metal complexes of both THSTZ and THASTZ have varied inhibition activities diameter against both bacteria.