411233-98-2

Upstream product

• 2071-20-7 bis-diphenylphosphinomethane 
• 12107-56-1 dichloro(1,5-cyclooctadiene)palladium(II) 
• 411233-96-0 [(μ-P,P-bis(diphenylphosphino)methylene)Co2(CO)4(μ-bis(diphenylphosphino)acetylene)] 
• 411233-94-8 Co2(CO)6(μ-((C6H5)2PCH2P(C6H5)2)) 
• 5112-95-8 bis(diphenylphosphino)acetylene 

Relevant academic research and scientific papers

Preparation and NMR studies of cobalt-containing diphosphine ligand chelated W, Ru, Au and Pd complexes: Suzuki cross-coupling reactions and carbonylation catalyzed by the Pd complex

Treatment of a cobalt-containing diphosphine ligand, [{μ-P,P-PPh2CH2PPh2}Co2(CO)4 {μ-PPh2C≡CPPh2}] 1 with metal complexes W(CO)6, Ru3(CO)12, AuCl(tht) (tht = tetrahydrothiophene) and (COD)PdCl2 (COD = 1,5-cycloctadiene) gave 1-chelated metal complexes [(1)W(CO)4] 3, [(μ-1)Ru3(CO)10] 4, [(1)(AuCl)2] 5 and [(1)PdCl2] 6, respectively. All these compounds were characterized by spectroscopic means whereas 3, 4 and 6 were also studied by X-ray diffraction. These compounds display chelating and bridging modes of metal-phosphine complexation. Variable-temperature 1H and 31P NMR experiments were carried out for 3-6 and revealed that the fluxional behavior of each individual bridging dppm fragment was affected greatly by the bite angle of 1 in each metal complex. Suzuki cross-coupling reactions were satisfactorily catalyzed by 6 under mild conditions. The reactions of aryl halides or iodothiophenes with chloroform and alkali in biphasic solution utilizing a catalytic amount of 6 result into the formation of benzoic and thiophenic acids, respectively.

Bis(diphenylphosphino) acetylene as bifunctional ligand in dicobalt carbonyl complexes

Treatment of bis(diphenylphosphino)acetylene (DPPA) with a bis(diphenylphosphino)-methylene (DPPM)-bridged dicobalt complex, [{μ-P,P-PPh2CH2PPh2}Co2(CO)6 ], 3, yielded a DPPA-bridged dicobalt compound