1. Department of Chemistry, North Eastern Hill University, Shillong 793 022, India
2. Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
3. Department of Biotechnology and Microbiology, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
4. Department of Chemistry, Tamilavel Umamaheswaranar Karanthai Arts College, Thanjavur 613 002, Tamil Nadu, India