The Crystal Structure of a Novel Copper(II) Complex with Asymmetric Ligand Derived from L-Histidine

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• 作者：Patrick Deschamps ; Prasad P. Kulkarni ; and Bibudhendra Sarkar
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：November 17, 2003
• 年：2003
• 卷：42
• 期：23
• 页码：7366 - 7368
• 全文大小：69K
• 年卷期：v.42,no.23(November 17, 2003)
• ISSN：1520-510X

文摘

The crystal structure of a novel copper(II) complex with a potentiallyhexadentate Schiff base ligand derived from L-histidine has beensolved by a single-crystal X-ray diffraction method at pH 7.4. Thecopper(II) ion is coordinated asymmetrically by a tetradentate ligandwith the amino and imidazole imido nitrogen atoms on one sideversus imino nitrogen and carboxylate oxygen atoms on the otherside in a distorted square-planar geometry. The formation of aninfinite chain through carboxylate coordination is observed. Thenovel ligand is obtained by the reaction between the L-histidinemolecules coordinated to copper(II) and 4-hydroxy-4-methylpentan-2-one formed by aldol condensation of acetone. This complexprovides insights into a possible structural arrangement betweencopper(II) and L-histidine which is physiologically important andabundantly present in biological systems.