98194-67-3

Basic information

• Product Name: Pd2(CH3)2(Cl)2(μdppm)2
• Synonyms: Pd2(CH3)2(Cl)2(μdppm)2
• CAS NO: 98194-67-3
• Molecular Weight: 1082.61
• Mol File: 98194-67-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Pd2(CH3)2(Cl)2(μdppm)2(CAS DataBase Reference)
• NIST Chemistry Reference: Pd2(CH3)2(Cl)2(μdppm)2(98194-67-3)
• EPA Substance Registry System: Pd2(CH3)2(Cl)2(μdppm)2(98194-67-3)

Safety Data

• Hazardous Substances Data: 98194-67-3(Hazardous Substances Data)

Upstream product

• 64345-29-5 [Pd2Cl2(μ-bis(diphenylphosphino)methane)2] 
• 115290-61-4 {Pd2(μ-H)(CH3)2(μ-dppm)2}Cl 
• 98194-66-2 Pd2CH3(Cl)(μ-dppm)2 
• 115290-56-7 {Pd2(μ-Cl)(COCH3)H(μ-dppm)2}BPh4 
• 115290-60-3 {Pd2(μ-H)(COCH3)2(μ-dppm)2}BPh4 
• 115290-50-1 {Pd2(μ-H)(CH3)2(μ-dppm)2}BPh4 

Relevant articles and documents

Synthesis and Reactions of Dinuclear Palladium Complexes Containing Methyls and Hydride on Adjacent Palladium Centers: Reductive Elimination and Carbonylation Reactions

The transmetalation reaction of trimethylaluminum with the palladium chloride dimer Pd2Cl2(μ-dppm)2 (1) (dppm = bis(diphenylphosphino)methane) at -78 deg C gave an intermediate, Pd2ClMe(μ-dppm)2 (2), which disproportionated at ca. 10 deg C to yield the trans-face-to-face palladium dimer Pd2Cl2Me2(μ-dppm)2 (3) and a palladium dimer Pd2Cl2(μ-CH2)(μ-dppm)2 (5).The use of excess trimethylaluminum at -40 deg C gave the dimethyl complex, Pd2Me2(μ-dppm)2 (7).When 2 and 7 were protonated, a stable A-frame chloro-bridged dimer + (6) and a hydride-bidged dimer + (8) were obtained.Warming 6 in solution to ambient temperature caused the reductive elimination of methane; 8 lost methane and ethane at ambient temperatures.Both reductive eliminations were strictly intramolecular as determined by crossover experiments.The reaction of 6 with CO (1 atm) at -20 deg C first gave a carbonyl-bridged complex + (10) that rearranged to the acyl complex + (11) and then on warming eliminated acetaldehyde.The carbonylation of 8 (1 atm) proceeded stepwise to give first the mono- and then the diacyl complexes.The diacyl complex + (13) underwent the reductive elimination of acetaldehyde at ambient temperatures.