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Issue 73, 2016, Issue in Progress
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Organoaluminum(iii) complexes of the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine ligand

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Abstract

The reaction of trimethylaluminum with the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine (L–H) ligand 1 afforded several new organometallic aluminium complexes. Reaction in a 1 : 1 stoichiometry at room temperature afforded a Lewis acid–base adduct, whereas thermolysis resulted in the loss of methane and the formation of a dimer complex, (L-AlMe2)2, 3. When reacted in a 1 : 2 ratio at 110 °C, the loss of two equivalents of methane yielded L2AlMe, 5, whereas when the reaction was performed at 60 °C, (L–H)AlMe2(L), 4, was found as an intermediate in the reaction. Compound 2 is, to the best of our knowledge, the first example of a structurally characterized primary imine coordinated to a triorganoaluminum(III) center. Attempts to form a two coordinate aluminum cation by CH3 abstraction are documented. All products were characterized via normal spectroscopic techniques and single crystal X-ray diffraction.

Graphical abstract: Organoaluminum(iii) complexes of the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine ligand

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Supplementary files

Article information


Submitted
15 Jun 2016
Accepted
16 Jul 2016
First published
18 Jul 2016

RSC Adv., 2016,6, 69270-69276
Article type
Paper

Organoaluminum(III) complexes of the bis-N,N′-(2,6-diisopropylphenyl)imidazolin-2-imine ligand

A. D. K. Todd, W. L. McClennan and J. D. Masuda, RSC Adv., 2016, 6, 69270
DOI: 10.1039/C6RA15507C

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