Figure 6: (a) 1H-1H COSY data (symmetrized) of 3 in DMSO–d6 showing assignments of NH(2) and CH3(2′′) signals; (b) 1D NMR data of 3 indicating the overlapping signals of CH3(2′), CH3(2´´) and the CH3 group of (dedtc′); (c) 1D NMR data of 3 showing the –CH2- signal of its chelated ancillary ligand(dedtc´), while (d) shows the corresponding –CH2- signal of the free ligand, Na(dedtc). 3H2O in DMSO –d6 (vide the supplementary information Figure S-1 for its 2D NMR data).