THE CRYSTAL-STRUCTURE OF DIBENZO-14-CROWN-4, A PREORGANIZED BASIS OF SQUARE PYRAMID COORDINATION FOR LITHIUM IONS

被引：18

作者：

DALLEY, NK ^{[1
]}

JIANG, WM ^{[1
]}

OLSHER, U ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT CHEM SERV,IL-76100 REHOVOT,ISRAEL

来源：

JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY | 1992年 / 12卷 / 1-4期

关键词：

X-RAY CRYSTAL STRUCTURE; DIBENZO-14-CROWN-4; PREORGANIZED LIGAND; LI+ BINDING;

D O I：

10.1007/BF01053870

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dibenzo-14-crown-4 (DB14C4) has a high selectivity for Li+. The rigidity of the molecule caused by the two benzene rings suggests that this is a preorganized ligand for metal ions and particularly for Li+. A single crystal structure study of the molecule was performed. The crystal data are: space group P2(1), a = 12.811(2), b = 5.106(1), c = 12.816(3) angstrom, beta = 115.44(1)-degrees, V = 757.0(2) angstrom 3 with Z = 2. The structure was refined to R = 0.049 and R(w) = 0.058 using 1804 unique data with F < 4-sigma(F). The conformation of the free ligand was found to be similar to that of the complexed ligand and the conformational parameters of the free ligand and its derivatives are compared to Li+ complexes of the ligand and its derivatives.

引用

页码：305 / 312

页数：8

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