Aminoborane 蟽 Complexes: Significance of Hydride Co-ligands in Dynamic Processes and Dehydrogenative Borylene Formation

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• 作者：David A. Addy ; Joshua I. Bates ; Michael J. Kelly ; Ian M. Riddlestone ; Simon Aldridge
• 刊名：Organometallics
• 出版年：2013
• 出版时间：March 25, 2013
• 年：2013
• 卷：32
• 期：6
• 页码：1583-1586
• 全文大小：234K
• 年卷期：v.32,no.6(March 25, 2013)
• ISSN：1520-6041

文摘

Systems of the type [(p-cym)Ru(PR₃)(H)(H₂BNⁱPr₂)]⁺ (R = Cy, Ph) can be synthesized from (p-cym)Ru(PR₃)Cl₂ and H₂BNⁱPr₂/Na[BAr^f₄] and are best formulated as (hydrido)ruthenium 魏¹-aminoborane complexes. VT-NMR measurements have been used to probe the 蟽-bond metathesis process leading to Ru鈥揌/H鈥揃 exchange, yielding an activation barrier of 螖G = 7.5 kcal mol^鈥? at 161 K. Moreover, in contrast to the case for related non-hydride-containing systems, reactivity toward alkenes constitutes a viable route to a metal borylene complex via sacrificial hydrogenation.