115290-49-8

Basic information

• Product Name: Pd2(CH3)2(μ-dppm)2
• Synonyms: Pd2(CH3)2(μ-dppm)2
• CAS NO: 115290-49-8
• Molecular Weight: 1011.7
• Mol File: 115290-49-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Pd2(CH3)2(μ-dppm)2(CAS DataBase Reference)
• NIST Chemistry Reference: Pd2(CH3)2(μ-dppm)2(115290-49-8)
• EPA Substance Registry System: Pd2(CH3)2(μ-dppm)2(115290-49-8)

Safety Data

• Hazardous Substances Data: 115290-49-8(Hazardous Substances Data)

Upstream product

• 115290-56-7 {Pd2(μ-Cl)(COCH3)H(μ-dppm)2}BPh4 
• 64345-29-5 [Pd2Cl2(μ-bis(diphenylphosphino)methane)2] 
• 75-24-1 trimethylaluminum 

Relevant articles and documents

General route to halide-bridged organopalladium A-frame complexes and studies of reductive elimination from these bimetallic systems

Reactions of [Pd2Cl2(μ-dppm)2] with RMgX (R = Me, Et, Bu, Ph, C6H4Me-4) at low temperature, followed by addition of CBr4 and excess NH4PF6 or 1 equiv of TIPF6, provided halide-bridged organopalladium A-frame complexes of the form [Pd2R2(μ-X)(μ-dppm)2]PF6. Mixed metal complexes were obtained similarly starting from [PdCtCl2(μ-dppm)2]. Unsymmetrical A-frames of the type [Pd2(C6H2Me3-2,4,6)R(μ-Cl)(μ-d ppm)2]+ were generated reaction of [Pd(C6H2Me3-2,4,6) (dppm)2]+ (obtained by treatment of [PdCl2 (cod)] w mesitylmagnesium bromide at low temperature, followed by 2 equiv of dppm) with [Pd2R2(μ-Cl)2 (AsPh3)2]. The organopalladium A-frames did not react readily with CO, but the corresponding acyl derivatives [Pd2(COR)2(μ-Cl)(μ-dppm)2]PF6 were produced by carbonylation of [Pd2R2(μ-Cl)2(AsPh3)2] followed by addition of dppm (R = Me, Et, Bn). Thermal decomposition of [Pd2(CH2Ph)2(μ-Cl)(μ-dppm)2]Cl was found to be first order in A-frame and resulted in quantitative formation of [Pd2Cl2(μ-dppm)2] and 1,2-diphenylethane. The methyl and aryl complexes underwent both reductive elimination and hydrogen abstraction reactions. [Pd2Et2(μ-Br)(μ-ddpm)2]PF6 decomposed by β-hydride elimination and subsequent reductive elimination to yield ethene and ethane, whereas the butyl derivative gave both 1- and 2-butene. Acetic acid was formed when [Pd2(COMe)2(μ-Cl)(μ-dppm)2]PF6 was heated in dmso-d6 solution, but decarbonylation was the predominant process in dioxane. The molecular structures of [Pd2(CH2Ph)2(μ-Br)(μ-dppm)2] PF6·H2O, 2C6H6 and [Pd2Cl2(μ-Cl)(μ-dppm)2]OH· 0.5(CH3)2CO are also described.