1. High-Resolution NMR Centre (HNMR) and Department of General and Organic Chemistry of the Faculty of Applied Sciences (AOSC), Free University of Brussels (VUB), Pleinlaan 2, B-1050 Brussel, Belgium, INAN, Catholic University of Louvain, Chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium, Department of Chemistry, The University of Adelaide, Australia 5005, and North Eastern Hill University, Regional Sophisticated Instrumentation Centre, Chemical Laboratory, Shillong 793003, India