Extremely bulky β-diketiminate complexes of calcium(ii) and ytterbium(ii)

Brant Maitland, Andreas Stasch, Cameron Jones

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

The potassium salt of an extremely bulky β-diketiminate, [K(Ar∗Nacnac)] (Ar∗Nacnac, [(Ar∗NCMe)2CH]-; Ar∗, C6H2Me{C(H)Ph2}2-4,2,6) was reacted with either CaI2 or YbI2(THF)2, which afforded [(Ar∗Nacnac)MI] (M = Ca or Yb). These are the first examples of structurally characterised, donor solvent-free, N-arene substituted β-diketiminato calcium and ytterbium complexes that incorporate a terminal iodide ligand. Reduction of [(Ar∗Nacnac)CaI] with sodium metal gave a complex product mixture, from which a few crystals of the β-diketiminate C-H activated product, [{Ca(μ-Ar∗Nacnac-H)}2], were obtained and crystallographically characterised. In an attempt to form a terminal ytterbium hydride compound, treatment of [(Ar∗Nacnac)YbI] with K[HBEt3] gave a good yield of the contact ion pair compound [(Ar∗Nacnac)Yb(HBEt3)].

Original languageEnglish
Pages (from-to)543-548
Number of pages6
JournalAustralian Journal of Chemistry
Volume75
Issue number9
DOIs
Publication statusPublished - 18 Feb 2022

Keywords

  • bulky ligand
  • C-H activation
  • calcium
  • metal hydrides
  • metal-metal bonding
  • reduction
  • ytterbium
  • β-diketiminate

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