• Jayesh. R. Gujarathi
• Hemlata.J.Nawate

The reaction of acetohydrazide with 3,5-dichloro-2-hydroxy acetophenone, 5-chloro-2-hydroxy acetophenone and 4,5-dichloro-2-hydroxy acetophenone was carried out to prepare hydrazide ligands..Complexes with Co (II) were synthesized by reaction of CoCl2.6H2O with hydrazide lignd in mole ratio 1;2.The ligands and complexes were characterized by Elemental analysis,ESI-MS,Infrared (FT-IR) spectroscopy,electronic spectra,Nuclear Magnetic Resonance (1HNMR and 13CNMR) magnetic measurement and conductivity at different temperature.The metal complexes and corresponding ligands were screened against bacterial parasites. It has been observed that the Co (II) complexes were found more biologically active than corresponding hydrazide ligands.

1:2 ratio,bioactive metal complexes,paramagnetism,CoCl2.6H2O.

"Antimicrobial screening and thermal stability study of six co¬-ordinate complexes of Co (II) derived from hydrazide ligands", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 9, page no.543-548, September-2020, Available :http://www.jetir.org/papers/JETIR2009072.pdf

"Antimicrobial screening and thermal stability study of six co¬-ordinate complexes of Co (II) derived from hydrazide ligands", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 9, page no. pp543-548, September-2020, Available at : http://www.jetir.org/papers/JETIR2009072.pdf