Synthesis of triethylphosphite complexes of nickel(II) and palladium(II) with tridentate Schiff base ligand for catalytic application in carbon-carbon coupling reactions

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• 作者：M. Muthu Tamizh ; R. Karvembu
• 关键词：Nickel(II) ; Palladium(II) ; Triethylphosphite ; Schiff base ; Coupling reaction
• 刊名：Inorganic Chemistry Communications
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：25
• 期：Complete
• 页码：30-34
• 全文大小：917 K

文摘

Air stable Ni(II) and Pd(II) complexes viz. [Ni(LS)(P(OEt)₃)] (1), [Ni(LN)(P(OEt)₃)] (2), [Pd(LS)(P(OEt)₃)] (3) and [Pd(LN)(P(OEt)₃)] (4) [where LS and LN are dianions of N-(2-mercaptophenyl)salicylideneimine and N-(2-mercaptophenyl)naphthylideneimine respectively] have been synthesized and characterized by analytical and spectral (electronic, FT-IR, ¹H, ¹³C and ³¹P NMR) methods. The ¹H-³¹P HMBC spectrum established the coupling of phosphorus with the azomethine proton of the Schiff base and the aliphatic protons of triethylphosphite. Novel Ni(II) and Pd(II) complexes exhibited good catalytic activity in Kumada-Tamao-Corriu and Suzuki-Miyaura coupling reactions respectively.