Dept.of Chemistry, Siddaganga Institute of Technology(Affiliated to Visvesvaraya Technological University, Belgaum), Tumkur 56003, India;
Dept.of Chemistry, M.S.Ramaiah Institute of Technology,(Affiliated to Visvesvaraya Technological University, Belgaum), Bangalore 560054, India;
Dept.of Chemistry, Siddaganga Institute of Technology(Affiliated to Visvesvaraya Technological University, Belgaum), Tumkur 56003, India;