第四級アンモニウム塩の水和について-粘度およびNMR測定による検討-

抄録

Viscosity measurements were made on aqueous solutions of LiCl, Me₄NCl, Et₄NCl, Me₃NBeCl, Et₃NBeCl and Me₂NBe₂Cl in the concentration range 0-3M. The viscosity B coefficients, which were calculated by Vand equation developed for concentrated suspensions, were shown to correlate with the B coefficient of the Jones-Dole equation for dilute solution of the salts. The values of V_e were calculated according to the model of Breslau-Miller. The behavior pattern obtained of V_e as a function of concentration gave indications of the hydration behavior of concentrated solution of the salts. It was suggested that the additivity rule for the B coefficient and for the value of V_e can be applied to the solution of salt mixtures.
Chemical shift of water proton was measured on aqueous solutions of LiCl, Me₄NCl, Et₄NCl, Me₃NBeCl and Et₃NBeCl in the concentration range 0-2M. The upfield shift of the water proton decreased in the order, Me₄NCI<Et₄NCl<Me₃NBeCl. This order was consistent with an increase in water structure promotion. The chemical shift of water proton (Δν) was fitted to the equation Δν=am+bm². It was suggested that additivity rule for the chemical shift of the water proton can not be applied to solutions of salt mixtures, except Me₄NCl-Et₄NCl mixtures.