• Suneetha Koppu
• Jyothi Pilli
• Rajitha Deshineni
• C.GyanaKumari

ABSTRACT: Two novel and air stable ternary Ni(II) and Zn(II) metal complexes namely [Ni(L1) (L2)H2O] (1) [Zn(L1) (L2) H2O] (2) where L1=2,6-bis (benzimidazole-2 yl) pyridine (BBP) and L2= Oxalate ion(AA) were synthesized and characterized by elemental analysis, molar conductance , magnetic susceptibility measurements, TGA, DTA studies, HRMS, IR, electronic spectra , SEM-EDX , powder XRD studies. Based on elemental analysis, electronic spectra, conductance and magnetic moment measurements, six coordinated geometries were assigned to all the four metal complexes. Both the complexes are non electrolytic in nature. Powder XRD studies proved that the complexes were in nano crystalline phase. Antibacterial activity of metal complexes was checked against 3 gram positive (MRSA, B.cereus .B.subtilis) and 3 gram negative bacterial pathogens ( P.aeruginosa ,E.coli, P.vulgaris). All the metal complexes inhibited the growth of bacterial strains and exhibited highest zone of inhibition against P.aeruginosa at 100µg/mL.

Keywords: Anti bacterial activity; benzimidazole; nano crystalline phase; ternary metal complex.

"Ni(II), Zn(II) TERNARY METAL COMPLEXES: SYNTHESIS, CHARACTERISATION AND ANTI BACTERIAL ACTIVITY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.803-808, June 2019, Available :http://www.jetir.org/papers/JETIR1908A68.pdf

"Ni(II), Zn(II) TERNARY METAL COMPLEXES: SYNTHESIS, CHARACTERISATION AND ANTI BACTERIAL ACTIVITY", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp803-808, June 2019, Available at : http://www.jetir.org/papers/JETIR1908A68.pdf