Cl-35 NMR STUDY ON ION PAIR AND IONIC SOLVATION IN SOLUTION

被引：0

作者：

Li Zhifen ^{[1
]}

Jing Junping ^{[1
]}

Sun Bin ^{[1
]}

Liu Ruilin ^{[1
]}

机构：

[1] Peking Univ, Inst Chem Phys, Beijing 100871, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1992年 / 8卷 / 06期

关键词：

Relaxation rate; Electric field gradient; Ion pair; Ionic solvation; Perchlorate salts;

D O I：

10.3866/PKU.WHXB19920611

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：

This research has recorded the linewidth of Cl-35 of Sr(ClO4)(2) and Ba(ClO4)(2) at 0.5 mol.L-1 in acetonitrile and ethanol. In terms of nuclear quadrupole moment relaxation mechanism and together with the results for Mg(ClO4)(2) and Ca(ClO4)(2) in literature contact type of ion pair for perchlorate salts of alkali earth was argued. The linewidth of Cl-35 at fixed concentration of Sr(ClO4)(2) and Ba(ClO4)(2) in acetonitrile or ethanol as bulk solvent was measured as a function of [B]/[M2+], where B represents H2O or DMF. The trend of the plot and the reason for that were explained and the solvation numbers for Sr3+ and Ba2+ were estimated. Mole conductivities of salts were also measured and explained for supporting of contact ion pair.

引用

页码：772 / 777

页数：6