1. 1Department of Chemistry, Kandaswami Kandar’s College, P.Velur, Namakkal-638 182, India.
2. 3Department of Chemistry, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore-641021, India.
3. 4Department of Chemistry, Sri Vasavi College, Erode-638316, India.
4. 2Department of Chemistry, Arumugam Pillai Seethai Ammal College,Tiruppatur-630211 India.