Mono- and Dinuclear Neutral and Cationic Iron(II) Compounds Supported by an Amidinato-diolefin Ligand: Characterization and Catalytic Application

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• 作者：Crispin Lichtenberg ; Mario Adelhardt ; Michael W枚rle ; Torsten B眉ttner ; Karsten Meyer ; Hansj枚rg Gr眉tzmacher
• 刊名：Organometallics
• 出版年：2015
• 出版时间：June 22, 2015
• 年：2015
• 卷：34
• 期：12
• 页码：3079-3089
• 全文大小：540K
• ISSN：1520-6041

文摘

A new amidinato-diolefin ligand is presented along with its sodium salt as a starting point for the preparation of iron(II) compounds. Rational synthetic approaches to cationic and dinuclear iron species have been established and allowed for the first isolation of an amidinato stabilized cationic Fe species. The versatility of the potentially tetradentate ligand system is mirrored by structural authentification of three different binding modes. These include rare examples of Fe(II)鈥搊lefin interactions in neutral compounds. A set of iron compounds was shown to be active as precatalysts in the synthesis of poly silylethers by dehydrogenative alcoholysis of PhSiH₃. The most active catalyst was generated from a dinuclear iron compound. Characterization techniques include NMR, IR, and M枚ssbauer spectroscopy, single crystal X-ray analysis, magnetic susceptibility measurements, and mass spectrometry.