Stereocontrol by a Pair of Epimeric Sugar-Derived Ligands of the Coordination Sphere of Copper(II) Complexes

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• 作者：Federico Cisnetti ; R&#xe9 ; gis Guillot ; Michel Th&#xe9 ; risod ; Michel Desmadril ; Clotilde Policar
• 刊名：Inorganic Chemistry
• 出版年：2008
• 出版时间：April 7, 2008
• 年：2008
• 卷：47
• 期：7
• 页码：2243 - 2245
• 全文大小：979K
• 年卷期：v.47,no.7(April 7, 2008)
• ISSN：1520-510X

文摘

A pair of novel C3-epimeric sugar-derived ligands (glycoligands) with a neutral N₄O donor set was synthesized. Copper(II) complexes of both ligands were obtained and characterized by X-ray crystallography. Cyclic voltammetry, electron paramagnetic resonance, and UV–vis spectroscopies showed similar electronic properties. Mirror-image CD spectra were obtained for the Cu^II d−d band, indicating an enantiomeric character of the coordination sphere, which has been rationalized structurally. This example shows the possible predetermination of stereochemistry for complexes by ligands based on a glycoscaffold.