78055-60-4

Upstream product

• 161816-46-2 {bis(diphenylphosphino)-2-pyridyl}platinum(II) chloride 
• 52522-40-4 Pd₂((C₆H₅CHCH)2CO)3*CHCl₃ 
• 52522-40-4 tris(dibenzylideneacetone)dipalladium⁽⁰⁾ chloroform complex 
• 33677-56-4 Pt(dba)2 
• 78088-45-6 bis(diphenyl-2-pyridylphosphine)palladium(II) dichloride 

Relevant academic research and scientific papers

2-(diphenylphosphino)pyridine platinum (I) and palladium (I) complex as an efficient binuclear catalyst for Suzuki-Miyaura coupling reaction in water under mild reaction conditions

Binuclear complex of platinum (I) and palladium (I) showed superior activity in Suzuki-Miyaura coupling reaction of aryl halides with arylboronic acids compared to the sole palladium or platinum species. The catalyst showed good tolerance in water and coupling reactions were performed in water as a green solvent. Aryl iodides were reacted at room temperature and the reactions of aryl bromides were performed at 60 °C.

Head-to-head and head-to-tail isomers of binuclear complexes of platinum(I) and palladium(I) involving 2-(diphenylphosphino)pyridine as a bridging ligand

Reaction of Pt(Ph2Ppy)2Cl2 (Ph2Ppy is 2-(diphenylphosphino)pyridine) with Pd2(dba)3·CHCl3 (dba is dibenzylideneacetone) or Pt(dba)2 yields PtPd(μ-Ph2Ppy)2Cl2 or Pt2(μ-Ph2Ppy)2Cl2, respectively. Extensive 31P{1H} and 195Pt{1H} NMR studies show these exist as the head-to-tail (HT) isomers where the phosphorus atoms are bound to different metal atoms. Metathesis of Pt2(μ-Ph2Ppy)2Cl2 with sodium iodide yields the HT isomer of Pt2(μ-Ph2Ppy)2I2. Treatment of Pt(Ph2Ppy)2I2 with Pd2(dba)3·CHCl3 or Pt(dba)2 yields PtPd(μ-Ph2Ppy)2I2 or Pt2(μ-Ph2Ppy)2I2, respectively. These exist as the head-to-head (HH) isomers with both phosphines bound to the same platinum atom through phosphorus. The HH → HT isomerization of PtPd(μ-Ph2PPy)2I2 occurs on heating the HH complex in chloroform solution. In order to account for the selective preparation of HT isomers from Pt(Ph2PPy)2Cl2 and the formation of HH isomers from Pt(Ph2Ppy)2I2, the solution composition of these two Pt(II) complexes has been examined. In solution, Pt(Ph2Ppy)2I2 exists as a mixture of cis and trans isomers along with the salt [Pt(Ph2Ppy)2I]I while Pt(Ph2Ppy)2Cl2 exists as the cis isomer and the salt [Pt(Ph2Ppy)2Cl]Cl. These salts contain one chelating and one monodentate phosphorus-bound Ph2Ppy. An explanation for the selective formation of HT or HH isomers is offered.