CALORIMETRIC TITRATION STUDY OF THE REACTION OF SEVERAL ORGANIC AMMONIUM CATIONS WITH 18-CROWN-6 IN METHANOL

被引：150

作者：

IZATT, RM

LAMB, JD

IZATT, NE

ROSSITER, BE

CHRISTENSEN, JJ

HAYMORE, BL

机构：

[1] INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47401

[2] BRIGHAM YOUNG UNIV,DEPT CHEM ENGN,PROVO,UT 84602

[3] BRIGHAM YOUNG UNIV,INST THERMOCHEM,PROVO,UT 84602

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1979年 / 101卷 / 21期

关键词：

D O I：

10.1021/ja00515a019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Log K, ΔH, and TΔS were determined by titration calorimetry for reaction of over 30 organic ammonium cations (guests) with 18-crown-6 (host) methanol at 25°C. The number of hydrogen atoms on the ammonium group available for bonding to the crown ether was the most important factor in determining complex stability. Steric hindrance of the approach of the guest to the host was also influential. Electronic factors showed no significant effect. Separation of charges on diammonium cations of varying chain length also had little effect on complex stabilities. © 1979, American Chemical Society. All rights reserved.

引用

页码：6273 / 6276

页数：4

共 19 条

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