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      Dinuclear PCP pincer complexes from Lewis acidic [Pd(OTf)(PCP)] and basic [Pd(4-Spy)(PCP)] (OTf = triflate; 4-Spy = 4-pyridinethiolate; PCP = –CH(CH₂CH₂PPh₂)₂)

      Neo, Kian Eang; Huynh, Han Vinh; Koh, Lip Lin; Henderson, William; Hor, T.S. Andy
      DOI
       10.1039/b710752h
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      Neo, K. E., Huynh, H. V., Koh, L. L., Henderson, W., Hor, T. S. A. (2007). Dinuclear PCP pincer complexes from Lewis acidic [Pd(OTf)(PCP)] and basic [Pd(4-Spy)(PCP)] (OTf = triflate; 4-Spy = 4-pyridinethiolate; PCP = –CH(CH₂CH₂PPh₂)₂). Dalton Transactions, 5701-5709.
      Permanent Research Commons link: https://hdl.handle.net/10289/3430
      Abstract
      The Lewis acidic pincer with a labile triflate ligand, viz. [Pd(OTf)(PCP)] (PCP = –CH(CH₂CH₂PPh₂)₂) 1 was prepared from [PdCl(PCP)] with AgOTf. It reacts readily with neutral bidentate ligands [L = 4,4 -bipyridine (4,4 -bpy) and 1,1 -bis(diphenylphosphino)ferrocene (dppf)] to give dinuclear PCP pincers [{Pd(PCP)}₂(μ-L)][OTf]₂ (L = 4,4 -bpy, 2; dppf, 3). [PdCl(PCP)] also reacts with 4-mercaptopyridine in the presence of KOH to give a Lewis basic pincer with a free pyridine functional group [Pd(4-Spy)(PCP)] 4. Its metalloligand character is exemplified by the isolation of an asymmetric dinuclear double-pincer complex [{Pd(PCP)}₂(μ-4-Spy)][PF₆] 6 bridged by an ambidentate pyridinethiolato ligand. Complexes 1, 2, 3, 4 and 6 have been characterized by single-crystal X-ray diffraction analyses.
      Date
      2007
      Type
      Journal Article
      Publisher
      Royal Society of Chemistry
      Collections
      • Science and Engineering Papers [3143]
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