1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
2. Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Campus, Mohanpur 741 246, India
3. Department of Pharmaceutics, College of Pharmacy, University of Minnesota, 9-127B Weaver-Densford Hall, 308 Harvard Street S.E., Minneapolis, Minnesota 55455, United States