Synthesis and characterisation of new PCsp3P-supported nickel complexes

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Abstract

The coordination behaviour of the aliphatic pincer ligand cis-1,3-bis-((di-tert-butylphosphino)methyl) cyclohexane with NiCl2 and NiBr2 was studied. Reflux in toluene afforded cyclometalated, tridentate PCsp3P pincer complexes, that were characterised by elemental analysis and NMR spectroscopy; the solid state structures were determined by X-ray diffraction showing an unusually long Ni-Br bond in the bromo complex. A preliminary account of their reactivity is reported and they were found to be unreactive towards base and hydride sources and to be poor catalysts in Kumada coupling reactions. (C) 2014 Elsevier B. V. All rights reserved.

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Subject classification (UKÄ) – MANDATORY

  • Chemical Sciences

Keywords

  • Aliphatic pincer complexes, PCP pincer ligands, Nickel, Cyclometalation, Coordination
Original languageEnglish
Pages (from-to)15-18
JournalJournal of Organometallic Chemistry
Volume759
Publication statusPublished - 2014
Publication categoryResearch
Peer-reviewedYes