Silver(I) complexation with tertiary amines in toluene
Abstract
The extent of complexation between silver(I) nitrate and triethylamine and tri-n-butylamine in toluene solutions at 23 °C has been determined by infrared spectroscopy. Both amines produced a mixture of monoamine and diamine silver complexes, and the second stepwise formation constants (K2) are reported. Infrared and atomic absorption experiments on solutions saturated with silver nitrate also yielded formal values of the first formation constant (K1) and of the solubility product (Ks) of silver nitrate in toluene. The results showed that Et3N coordinates more strongly with silver(I) in toluene than does Bu3nN. The values of K1 in toluene were found to be 4–5 powers of ten higher than in protic and dipolar aprotic solvents, while the values of K2 were smaller. Structural and solvation reasons are given to explain these results.