Control of the helical chirality in octahedral complexes by a chiral macrobicyclic cavity possessing six convergent hydroxyl groups

被引：14

作者：

Baret, P

Beaujolais, V

Gaude, D

Coulombeau, C

Pierre, JL

机构：

[1] LEDSS, UMR CNRS 5616, Université J. Fourier, F-38041 Grenoble Cedex 9

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 1997年 / 3卷 / 06期

关键词：

chirality; coordination modes; macrocyclic ligands; octahedral complexes; supramolecular chemistry;

D O I：

10.1002/chem.19970030619

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The (aR,aR,aR) and (aS,aS,aS) enantiomers of a chiral macrobicyclic ligand with a bicapped tris(binaphthol) structure were synthesized. Complexation of gallium(III), chromium(III) and iron(III) centres in the chiral cavities of these two ligands yielded exclusively one octahedral configuration in each case: the (aR,aR,aR) enantiomer gave a Lambda complex and the (aS,aS,aS) enantiomer a Delta complex. These assignments were established by CD spectroscopy for chromium and iron centres and by molecular modelling.

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页码：969 / 973

页数：5

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