Molybdenum, Nickel, Titanium and Vanadium Complexes of Triethylene Tetramine, Diethylene Triamine Based Schiff Bases

Abstract

Schiff base complexes of Mo(VI), Ni(II), Ti(IV) and V(V) formed from salicylaldehyde and triethylenetetramine (trien) namely (Ni²⁺L₁).2H₂O, [Ti⁴⁺(L₁H₂)(C₂O₄)2].2H₂O, [V⁵⁺O₂L₁H]·2H₂O and [Mo⁶⁺O₂[L₁H₂)] Mo⁶⁺O₄ where L₁H₂ represents the trien Schiff base and Mo(V), Ni(II), Ti(III) and V(V) complexes formed from salicylaldehyde and diethylenetriamine (dien) namely [Ni²⁺(L₂H)₂].H₂O, [KTi³⁺(L₂H)₂C₂O₄], [V⁵⁺O₂L₂H)] and [Mo⁵⁺L₂]₂ (Mo⁶⁺O₄)₃.2H₂O where L₂H₂ represents the dien Schiff base are reported. The complexes have been characterized by elemental and thermal analysis, conductivity studies, IR, NMR, EPR and UV-VIS studies. Some of the complexes show promising antibacterial activity against bacterial K. pneamonia, E. coli, P. vulgaris, Salmonella typhi, E. faecalis, P. aeruginosa, S. epidermis, methiciline resistant S. aureus, ciprofloxin resistant E. coli and carbapennen resistant A. baumanii.