Solution and Solid-State Structures of the Binuclear Zerovalent Palladium Complex [(dippe)Pd]2(-dippe) (dippe = 1,2-Bis(dii

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• 作者：Michael D. Fryzuk ; Guy K. B. Clentsmith ; Steven J. Rettig ; and Gerhard H&auml ; gele
• 刊名：Organometallics
• 出版年：1996
• 出版时间：April 16, 1996
• 年：1996
• 卷：15
• 期：8
• 页码：2083 - 2088
• 全文大小：270K
• 年卷期：v.15,no.8(April 16, 1996)
• ISSN：1520-6041

文摘

The reaction of PdCl₂(dippe), wheredippe = 1,2-bis(diisopropylphosphino)ethane, with2equiv of KBEt₃H in toluene generates the binuclearpalladium(0) derivative[(dippe)Pd]₂(mages/entities/mgr.gif">-dippe) (4) in 35% yield; alternatively, the reaction of[(mages/gifchars/eta.gif" BORDER=0 >³-C₄H₇)Pd]₂(mages/entities/mgr.gif">-Cl)₂with MeONa inthe presence of 3 equiv of dippe generates 4 as well.Mechanistic studies on the attemptedformation of mixed binuclear complexes are reported as well as the useof 4 as a catalyst forthe reductive dechlorination of chloroarenes. Analysis of thesecond-order [AB₂]₂ spin systemwas accomplished by iteration of the 202.47 MHz³¹P{¹H} NMR spectrum of 4;the solutionstructure and the solid-state structures are found to be very nearlyidentical.