Cationic lanthanide complexes of neutral tripodal N,O ligands: enthalpy versus entropy-driven podate formation in waterElectronic supplementary information (ESI) available: Plots of ?parai,Ln/?SZ?Ln vs. DLn/?SZ?Ln for proton H3 in [Ln(tpaam)]3+ podates in D2O at 298 K (Fig. S1). Plots of ?parai,Ln/?SZ?Ln vs. ?parak,Ln/?SZ?Ln for the H3?H5 and H7?H5 pairs in [Ln(tpaam)]3+ podates in D2O at 298 K (Fig. S2).Van't Hoff plots for europium complexation by tpa and tpaam in water (ionic strength 1 mol L?1 KCl) (Fig. S3). See http://www.rsc.org/suppdata/dt/b4/b403647f/