Stability constants Table

Complexes with the Fluoride Ion. For the compilation of stability constants (Table IV) of complexes with F , we have used, when needed, thermodynamic parameters (K, AH) pertaining to the dissociation of hydrofluoric acid as given by Smith and Martell (77) or extrapolated from their selection. 

Considering the anion concentration ranges in natural waters (Table II) and the magnitude of the corresponding plutonium stability constants (Table III), the chemistry of plutonium, as well as that of uranium and neptunium, is almost entirely dominated by hydroxide and carbonate complexation, considering inorganic complexes only (41, 48, 49). ... 

Within the series of 3-hydroxy-4-p5iridinonates, it is difficult to discern which alkyl substituents at positions 1 and 2 maximize stability constants. Table IV suggests that, from log Ki values for 2+ cations, 1,2-diethyI complexes M(depp) are marginally more stable than 1,2-dimethyI complexes M(dmpp). However Table VIII shows log Ps for MCdeppls to be smaller than log P3 for M(depp)3, for M = Fe, Ga, and In, but the opposite for M — Gd. Unfortunately differences between experimental conditions, particularly in relation to the nature and concentration of salts added to maintain ionic strength, often... 

Formation and Stability Constants Table 7 Formation and stability constants... 

A series of macroheterobicyclic compounds (42, 43) of the type presented in Fig. 9 have remarkable complexing properties, as is demonstrated by their stability constants (Table 4). 

The values of r are obtained experimentally at various concentrations and then 1/r is plotted against the equilibrium concentrations of the reactants. The slope of the plot gives f and the intercept gives kr. The kinetic data obtained are given in Table 7.4. A least square analysis of the data gave the values of kf and kr along with the stability constants (Table 7.5). Temperature dependence of the rate constants gave activation parameters (Table 7.6). 

III) forms very strong and kinetically stable cyanide complexes in aqueous solution (97). The study, performed by means of quantitative 205T1NMR and NMR spectroscopy in combination with pH measurements, resulted in the determination of the stability constants (Table... 

Using the rate constants of the dissociation reaction (17) and the stability constants (Table III) for the mixed complexes Tl(EDTA)Br and T1(EDTA)SCN , the rate constants of the formation reaction were calculated as kf = K -. The obtained values, =... 

The coordination of several ions to La(III) in methanol has been studied by La NMR (Bunzii et al. 1987). The chemical shift of the La-NMR resonance is indeed governed by the composition of the iimer coordination sphere. The chemical shifts measured for several LaX methanolic solutions are shown in fig. 9. The large variation of these shifts versus the concentration of the salts is indicative of the presence of a significant inner-sphere interaction between La(III) and all the anions studied to form complexes of the type [LaX (solv)x] "". The absolute stability constants (table 8) for the anion complexation can be obtained from the following equations, where x is the mole fraction of LaX ", and where the solvation has been neglected ... 

---