1. Solid State and Structural Chemistry Unit, Framework Solids Laboratory, Indian Institute of Science, Bangalore 560012, India
2. Department of Chemistry, Hemvati Nandan Bahuguna Garhwal University, SRT Campus, New Tehri 249199, Uttarakhand, India
3. Department of Chemistry, BITS Pilani K. K. Birla Goa Campus, Goa 403726, India