冠醚配合物热力学性质的研究(Ⅷ)--若干苯-18-冠-6的甲基衍生物与碱金属配位反应的NMR研究

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (1): 5.

冠醚配合物热力学性质的研究(Ⅷ)--若干苯-18-冠-6的甲基衍生物与碱金属配位反应的NMR研究

罗勤慧, 李重德, 冯旭东, 魏金华, 胡宏纹, 戴安邦

南京大学配位化学研究所

收稿日期:1985-06-29 出版日期:1987-01-24 发布日期:1987-01-24

Studies on Thermodynamic Properties of Crown Coordination Compounds (Ⅷ)--The Coordination Reaction of Methyl Benzo-18-Crown-6 Derivates with Some Alkali Metal Ions Studied by NMR Method

Luo Qinhui, Li Chongde, Feng Xudong, Wei Jinhua, Hu Hongwen, Dai Anbang

Coordination Chemistry Institute, Nanjing University, Nanjing

Received:1985-06-29 Online:1987-01-24 Published:1987-01-24

摘要/Abstract

摘要： 用NMR谱研究了醚环上具有1-3个甲基的18-冠-6衍生物和一些碱金属离子的配位反应,得到了配合物在溶液中有关构象的信息,籍助于CNDO/2方法计算了在醚碳原子上的电荷密度,并测定了Na⁺配合物的稳定常数。

Abstract: Thecoordination reaction of alkali metal ions with methyl Benzo-18-Crown-6 derivates containing 1-3 methyl groups on their crown ring was studied by ¹³CNMR method, which gives the information about the conformation of the complexes in solution.The electric charge density of carbon atoms on the crown ring was calculated by CNDO/2 method and a linear relationship between electric charge density and corresponding chemical shift was found.The stability constants of Na⁺-crown complexes were determined by ²³NaNMR,showing also a linear relationship with the number of methyl groups on the crown ring. lgβ= 4.16-0.20n wherein n denotes the number of methyl groups.

TrendMD:

罗勤慧, 李重德, 冯旭东, 魏金华, 胡宏纹, 戴安邦. 冠醚配合物热力学性质的研究(Ⅷ)--若干苯-18-冠-6的甲基衍生物与碱金属配位反应的NMR研究. 高等学校化学学报, 1987, 8(1): 5.

Luo Qinhui, Li Chongde, Feng Xudong, Wei Jinhua, Hu Hongwen, Dai Anbang . Studies on Thermodynamic Properties of Crown Coordination Compounds (Ⅷ)--The Coordination Reaction of Methyl Benzo-18-Crown-6 Derivates with Some Alkali Metal Ions Studied by NMR Method. Chem. J. Chinese Universities, 1987, 8(1): 5.