© 2019 JETIR March 2019, Volume 6, Issue 3 www.jetir.org (ISSN-2349-5162) JETIRAO06089 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 561 Metal complex of benzimidazole containing quinolinone derivative: synthesis, spectroscopic, thermal and antimicrobial studies Nilesh S. Pawar* and Sanjay R. Chaudhari 1 * Synthetic Research Laboratory Department of Chemistry Pratap College, Amalner Dist. – Jalgaon 425 401[M.S.]INDIA E-mail: nileshpawar1329@rediffmail.com 1 Sri. V. S. Naik A.C.S. College, Raver Abstract We have synthesized ligand base approach benzimidazole containing quinolinone compound i.e. 7-hydroxy-4-methyl-1-[(2-thiazol-4-yl)-1H benzimidazole-5yl]-quinolin-2-(1H)- one and studied their metal complexiation with Copper. The synthesized ligand and metal complex was screened for antifungal activity and antibacterial activity against some Gram-positive and Gram-negative bacteria. Key words: Benzimidazole, Thiabendazole, Coumarin, Quinolinone and metal complex. Introduction Coumarins possess a number of biological activities like anticoagulant, antioxidant and antiviral. Coumarin belongs to a group of benzopyrones in which benzene ring is fused with pyrone. Coumarin also has pharmacological, biochemical and therapeutic applications [1].Coumarins (2H-1-benzopyran-2-ones) are important oxygen containing fused heterocycles used in drugs and dyes [2,3].Coumarin can be converted into more useful products by incorporation of different groups [4]. Coumarins are also known to have antidiabetic activity [5], as well as antioxidant activity [6].