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

doi:10.1021/ic501638v

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(OEt_²)], 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 language	English
Pages (from-to)	10543-10552
Number of pages	10
Journal	Inorganic Chemistry
Volume	53
Issue number	19
Early online date	9 Sep 2014
DOIs	https://doi.org/10.1021/ic501638v
Publication status	Published - 6 Oct 2014

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BignacMg paper revised
This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Inorganic Chemistry, copyright © American Chemical Society after peer review. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/ic501638v
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title = "Mononuclear three-coordinate magnesium complexes of a highly sterically encumbered β-diketiminate ligand",

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 [LMgC{\^i} -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].",

author = "M. Arrowsmith and B. Maitland and Gabriele Kociok-K{\"o}hn and A. Stasch and C. Jones and M.S. Hill",

year = "2014",

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doi = "10.1021/ic501638v",

language = "English",

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T1 - Mononuclear three-coordinate magnesium complexes of a highly sterically encumbered β-diketiminate ligand

AU - Arrowsmith, M.

AU - Maitland, B.

AU - Kociok-Köhn, Gabriele

AU - Stasch, A.

AU - Jones, C.

AU - Hill, M.S.

PY - 2014/10/6

Y1 - 2014/10/6

N2 - 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].

AB - 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].

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

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ER -

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

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

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