NMR STUDIES OF AQUEOUS ELECTROLYTE SOLUTIONS .2. HYDRATION OF A1(NO3)3 DETERMINED FROM TEMPERATURE EFFECTS ON PROTON SHIFT

被引：36

作者：

MALINOWS.ER

KNAPP, PS

机构：

[1] Department of Chemistry and Chemical Engineering, Stevens Institute of Technology, Hoboken, NJ

[2] Department of Chemical Engineering and Chemistry, Newark College of Engineering, Newark, NJ

来源：

JOURNAL OF CHEMICAL PHYSICS | 1968年 / 48卷 / 11期

关键词：

D O I：

10.1063/1.1668167

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Proton shifts of aqueous Al(NO3)3solutions are measured as a function of temperature and concentration. Using a two-state model which is applicable to dilute solutions, the total hydration of Al(NO 3)3is found to be 13.4. Two explanations of this value are postulated: (1) Each of the six water molecules in the primary layer of the aluminum ion are bound to two molecules of the secondary layer, with nitrate ions replacing some secondary water molecules; (2) The aluminum ion is hydrated to six water molecules whereas each nitrate ion is hydrated to two or three water molecules.

引用

页码：4989 / &

共 13 条

[1] NMR DETERMINATION OF HYDRATION NUMBERS OF CATIONS IN AQUEOUS PERCHLORATE SOLUTION [J].