[1] Jawaharlal Nehru Technol Univ Anantapur, Ananthapuramu, India
[2] CSIR Indian Inst Chem Technol, Fluoro Agrochem, Hyderabad, India
[3] Jawaharlal Nehru Technol Univ Anantapur, JNTUA Coll Engn, Dept Chem Engn, Constituent Coll, Ananthapuramu, India
[4] CSIR Indian Inst Chem Technol, Ctr X Ray Crystallog, Hyderabad 500007, India