Mononuclear three-coordinate magnesium complexes of a highly sterically encumbered β-diketiminate ligand

M. Arrowsmith, B. Maitland, Gabriele Kociok-Köhn, A. Stasch, C. Jones, M.S. Hill

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Abstract

The highly sterically encumbered chelating β-diketiminate ligand, [HC{C(Me)N(2,6-CHPh2-4-MeC6H2)}2]_, ArL_, has been used to prepare a series of heteroleptic three-coordinate magnesium complexes. Both the bis(imine) and imine-enamine tautomers of the ligand precursor, ArLH, as well as the diethyl ether adduct of the bromide complex [ArLMgBr(OEt2)], the monomeric methyl complex [ArLMgMe], the THF-solvated and unsolvated n-butylmagnesium complexes [ArLMgnBu(THF)] and [LMgBu], and the 1-hexynyl analogue [LMgCî -CBu] have been crystallographically characterized. Both n-butylmagnesium complexes showed remarkable stability in air, both in the solid state and in solution. Single crystals of the highly sensitive magnesium hydride, [ArLMgH], underwent partial hydrolysis by solid-state water diffusion to the isostructural hydroxide compound [LMgOH].

Original languageEnglish
Pages (from-to)10543-10552
Number of pages10
JournalInorganic Chemistry
Volume53
Issue number19
Early online date9 Sep 2014
DOIs
Publication statusPublished - 6 Oct 2014

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