G. Mallika Devi

Department of Chemistry, Osmania University, Hyderabad-500007, India

D. A. Padmavathi

Department of Chemistry, Osmania University, Hyderabad-500007, India

R. Sanjeev

Department of Chemistry, Geethanjali College of Engineering and Technology, Cheeryala, Rangareddy Dist., Telangana, India

V. Jagannadham

Department of Chemistry, Osmania University, Hyderabad-500007, India