1. Department of Chemical Sciences; Tezpur University; Assam 784028 India
2. Center for NMR and Structural Chemistry; Indian Institute of Chemical Technology; Uppal Road, Tarnaka, Hyderabad Telangana 500007 India
3. Division of Crop Protection Chemicals; Indian Institute of Chemical Technology; Uppal Road, Tarnaka, Hyderabad Telangana 500007 India