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Issue 30, 2013
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Magnesium, zinc and aluminium complexes supported by tripodal diaminebis(aryloxido) ligands: synthesis, solid state and solution structure

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Abstract

The reactions of the diaminebis(aryloxido) ligand precursors [Me2NCH2CH2N(CH2-4-R-C6H3OH)2] [R = C(CH3)2CH2C(CH3)3, H22L11; R = CH3, H22L22] with MgnBu2, ZnEt2 and AlEt3 create complexes of general formula [M2(μ-L-κ4O,N,N,O)2] (M = Mg, 1a for L1 and 1b for L2; M = Zn, 2a for L1 and 2b for L2) and [Al2(μ-L-κ3O,N,N,O)2Et2] (3 for L1) in good yields. Compounds 1a–3 were characterized by NMR spectroscopy and ESI-MS experiments. The definitive molecular structure of 1b·CH2Cl2, 2a·H2O, 2b·CH2Cl2 and 3 was provided by a single-crystal analysis and revealed their dimeric nature with an M2O2 planar core. The L1 and L2 ligands coordinate as the dianions in a tetradentate/bridging manner in 1b, 2a, 2b and in a tridentate/bridging mode in 3. The NMR spectra showed that the solid state of these compounds is essentially retained in solution.

Graphical abstract: Magnesium, zinc and aluminium complexes supported by tripodal diaminebis(aryloxido) ligands: synthesis, solid state and solution structure

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Publication details

The article was received on 09 Apr 2013, accepted on 28 May 2013 and first published on 29 May 2013


Article type: Paper
DOI: 10.1039/C3DT50938A
Citation: Dalton Trans., 2013,42, 10847-10854
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    Magnesium, zinc and aluminium complexes supported by tripodal diaminebis(aryloxido) ligands: synthesis, solid state and solution structure

    E. Kober, Z. Janas, T. Nerkowski and L. B. Jerzykiewicz, Dalton Trans., 2013, 42, 10847
    DOI: 10.1039/C3DT50938A

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