1. Department of Chemistry, Central College Campus, Bangalore University, Ambedkar Veedi, Bangalore, 560 001, India
2. Siddaganga Institute of Technology, Tumkur, Karnataka, 572 103, India
3. National Chemical Laboratories, Pune, 411 008, India
4. National Centre for Catalysis Research, I.I.T. Madras, Chennai, 600 036, India