Reactions of hydroborating reagents with phosphinorhodium hydride complexes: molecular structures of a Rh₂B₃ metallaborane cluster, an L₂Rh(η²-H

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• 作者：Westcott ; Stephen A. ; Marder ; Todd B. ; Baker ; R. Thomas ; Harlow ; Richard L. ; Calabrese ; Joseph C. ; et. al.
• 关键词：Rhodium hydrides ; Bridging boryls ; Catalyzed hydroborations
• 刊名：Polyhedron
• 出版年：2004
• 期刊代码：87_02775387
• 类别：ch
• 出版时间：November 11, 2004
• 卷：23
• 期：17
• 页码：2665-2677
• 文件大小：506 K

摘要

The formation of products derived from competing reactions in Rh-catalyzed alkene hydroborations prompted us to study in situ interactions of several hydroborating reagents with unsaturated phosphinorhodium complexes. The reaction of [Rh(μ-H)(DiPPE)]₂ (1) with borane–dimethylsulfide gave several rhodium–boron containing products including the structurally characterized metallaborane [RhH(DiPPE)]₂B₃H₇ (2) [DiPPE=1,2-bis(diisopropylphosphino)ethane]. Addition of thexylborane and 9-H-BBN dimers, containing alkyl groups, to 1 gave the corresponding mononuclear substituted borohydride complexes Rh(η²-H₂BRR^′)(DiPPE) (4: R=H, R^′