• Mukesh Baboo
• Mukesh Kumar
• Dayaveer

Trivalent chromium and divalent copper complexes with mixed ligands such as terephthalaldehyde bis (semicarbazone L1, terephthaladehyde bis (4-phenyl thio semicarbazone L2, 2-Hydroxy 1,2 diphenyl ethane semicarbazone L3, 5-bromo-o-anisaldehyde bis (semicarbazone) L4 and tribuline bis (Semicarbazone L5) have been prepared in neutral and basic medium. The obtained complexes have been characterized by using magnetic moment, IR spectra, electronic spectra, molar conductance measurement, elemental analyses, relative molecular weight determination. The study suggested that above ligands from positive ionic complexes have general formula [ML’x]n (NO3)n M=Cr, Cu, L-bidentate ligand x =3, L’’- n = +3, + 2 OR [Cr L’3] (NO3)3 in neutral (slightly acidic) medium. The ligands terephthaldehyde bis (semicarbazone), terephthalaldehyde bis (4-phenyl thiosemicarbazone), 2-hydroxy 1,2 di phenyl ethane semicarbazone, 5-bromo-o-anisaldehyde bis (semicarbazone and tribuline bis (smicarbazone), acted as neutral or anionic in neutral (slightly acidic) or basic medium, respectively. All the investigated complexes have octahedral geometry. The synthesized ligand and metal complexes were subjected to antibacterial studies. The studies showed the enhance activity of metal complexes again one or more species as compared to the uncomplexed ligand.

SYNTHESIS, CHARACTERISTICS AND BIOLOGICAL ACTIVITY OF POLYDENTATE SCHIFF BASE COMPLEXES OF DI & TRI VALENT TRANSITION METAL IONS

" SYNTHESIS, CHARACTERISTICS AND BIOLOGICAL ACTIVITY OF POLYDENTATE SCHIFF BASE COMPLEXES OF DI & TRI VALENT TRANSITION METAL IONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 9, page no.d312-d327, September-2022, Available :http://www.jetir.org/papers/JETIR2209337.pdf

" SYNTHESIS, CHARACTERISTICS AND BIOLOGICAL ACTIVITY OF POLYDENTATE SCHIFF BASE COMPLEXES OF DI & TRI VALENT TRANSITION METAL IONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 9, page no. ppd312-d327, September-2022, Available at : http://www.jetir.org/papers/JETIR2209337.pdf