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

Brant Maitland, Andreas Stasch*, Cameron Jones*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
1 Downloads (Pure)

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/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
Article numberCH21283
JournalAustralian Journal of Chemistry
VolumeOnline Early
Early online date18 Feb 2022
DOIs
Publication statusE-pub ahead of print - 18 Feb 2022

Keywords

  • β‐diketiminate
  • Bulky ligand
  • Calcium
  • C–H activation
  • Metal hydrides
  • Metal–metal bonding
  • Reduction
  • Ytterbium

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