STRUCTURES OF ISOMERIC SUBSTITUTED 14-CROWN-4 ETHERS AND THEIR LISCN COMPLEXES

被引：4

作者：

BURNS, JH

SACHLEBEN, RA

DAVIS, MC

机构：

[1] Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, Oak Ridge

来源：

INORGANICA CHIMICA ACTA | 1994年 / 223卷 / 1-2期

关键词：

CRYSTAL STRUCTURES; CROWN ETHER COMPLEXES; LITHIUM COMPLEXES;

D O I：

10.1016/0020-1693(94)04006-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Crystal structures of methyleno,tetracyclopentyl-14-crown-4 (1), methyl,tetracyclopentyl-14-crown-4 (2), methyleno,didecalino-14-crown-4 (3), methyl,didecalino-14-crown-4 (4), 2.LiSCN and 4.LiSCN were determined by X-ray diffraction methods. The free ligands, 2 and 4, have their rings collapsed, but on complexation open up to accommodate an Li+ ion. It is bonded to all four O atoms of the crown in each case and to an apical SCN- ion to form a rectangular pyramid. The methyl group is pseudoaxial in 2.LiSCN and pseudoequatorial in 4.LiSCN. In 2 and 4 the bridging propylene groups are disordered over two sites.

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页码：125 / 130

页数：6

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