ansa-Chromocene Complexes. 2. Isocyanide Derivatives of Cr(II) and Cr(III), Their Syntheses, X-ray Crystal Structures, and Physical Properties
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- 作者：Pamela J. Shapiro ; Ralph Zehnder ; David M. Foo ; Philippe Perrotin ; Peter H. M. Budzelaar ; Sharon Leitch ; and Brendan Twamley
- 刊名：Organometallics
- 出版年：2006
- 出版时间：January 30, 2006
- 年：2006
- 卷：25
- 期：3
- 页码：719 - 732
- 全文大小：356K
- 年卷期：v.25,no.3(January 30, 2006)
- ISSN：1520-6041
文摘
A variety of 18e ansa-chromocene isocyanide complexes were prepared via ligand substitution on thecarbonyl complexes. The relative 
-accepting character of the different isocyanide ligands was evaluatedfrom the structural, spectroscopic, and electrochemical properties of the complexes. One-electron chemicaloxidation of the complexes generates low-spin, 17e ansa-chromocene isocyanide cations, the structuraland spectroscopic properties of which were compared with their neutral precursors. Density functionaltheory (DFT) calculations were performed on model complexes in order to elucidate the nature of thebonding between the chromium and the isocyanide ligands and to explain the effects of one-electronoxidation of the complexes.
-accepting character of the different isocyanide ligands was evaluatedfrom the structural, spectroscopic, and electrochemical properties of the complexes. One-electron chemicaloxidation of the complexes generates low-spin, 17e ansa-chromocene isocyanide cations, the structuraland spectroscopic properties of which were compared with their neutral precursors. Density functionaltheory (DFT) calculations were performed on model complexes in order to elucidate the nature of thebonding between the chromium and the isocyanide ligands and to explain the effects of one-electronoxidation of the complexes.