1. 1Department of Chemistry, V.H.N. Senthikumara Nadar College (Autonomous), Virudhunagar-626001, India 2Department of Chemistry, Sri Kaliswari College (Autonomous), Sivakasi-626123, India
2. Department of Chemistry, V.H.N. Senthikumara Nadar College (Autonomous), Virudhunagar-626001, India