Tris(pyrazolyl)phosphine Oxides. Synthesis and Coordination Chemistry with Copper(I)

详细信息    查看全文

• 作者：Cornelis G. J. Tazelaar ; Volodymyr Lyaskovskyy ; Tom van Dijk ; Dani毛l L. J. Broere ; Ludo A. Kolfschoten ; Rima Osman Hassan Khiar ; Martin Lutz ; J. Chris Slootweg ; Koop Lammertsma
• 刊名：Organometallics
• 出版年：2012
• 出版时间：April 23, 2012
• 年：2012
• 卷：31
• 期：8
• 页码：3308-3315
• 全文大小：356K
• 年卷期：v.31,no.8(April 23, 2012)
• ISSN：1520-6041

文摘

A set of substituted tris(pyrazolyl)phosphine oxides (OP(pz^x)₃) has been prepared in high yield and applied as neutral scorpion-type ligands. The P apex provides a convenient spectroscopic handle. Substitution at the 3-position of the pyrazolyl ring influences the steric demands of the ligand, while substitution at the 5-position enhances the stability. Copper(I) acetonitrile complexes of the OP(pz^x)₃ ligands were prepared and tested in ligand exchange reactions with PPh₃ and CO. The 谓(CO) values of the carbonyl complexes demonstrate the electron-withdrawing properties of the ligands. These observations show that OP(pz^x)₃ ligands are an interesting extension of the widely used scorpion-type ligands.