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Issue 2, 2005
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Organoaluminium and -gallium compounds with N,N-diisopropylaminomethyl groups

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Abstract

The N,N-diisopropylaminomethyl aluminium compound [tBu2AlCH2NiPr2·LiCl]2 (1) and the gallium compounds Li[tBu2Ga(CH2NiPr2)2] (2) and [tBu2GaCH2N(H)iPr2]Cl·tBu3Ga (3) were prepared by transmetallation of N,N-diisopropylaminomethyllithium LiCH2NiPr2 with di-tert-butylaluminium or -gallium chloride, and characterised by elemental analyses, multinuclear NMR spectroscopy (1H, 13C, 27Al, 7Li) and IR spectroscopy. The crystal structures have been determined by single crystal X-ray diffraction. Compound 1 aggregates as a centrosymmetric dimer, with two Al–C–N units connected by a frame of two LiCl molecules [Al–Cl 2.367(1), Cl–Li 2.339(4) and 2.374(4), Li–N 1.977(4) Å]. Compound 2 is a lithium organogallate with two weak Li⋯N bonds [1.965(7) and 1.937(7) Å]. Compound 3 contains two different moieties: tBu3Ga and a [tBu2GaCH2N(H)iPr2]+ cation, which are bridged by a Cl anion [Ga–Cl 2.445(1) and 2.579(1), H⋯Cl 2.362(3) Å].

Graphical abstract: Organoaluminium and -gallium compounds with N,N-diisopropylaminomethyl groups

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Publication details

The article was received on 08 Oct 2004, accepted on 24 Nov 2004 and first published on 13 Dec 2004


Article type: Paper
DOI: 10.1039/B415585H
Citation: Dalton Trans., 2005,0, 380-384

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    Organoaluminium and -gallium compounds with N,N-diisopropylaminomethyl groups

    X. Tian, R. Fröhlich and N. W. Mitzel, Dalton Trans., 2005, 0, 380
    DOI: 10.1039/B415585H

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