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Issue 1, 2004
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Dicatechol-diimines: easily accessible ligands for the self-assembly of dinuclear triple-stranded helicates

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Abstract

Dicatechol ligands 3b–g-H4 are simply prepared by imine formation of 2,3-dihydroxybenzaldehyde 2 with a series of different diamines 1b–g. An X-ray structural analysis was obtained for the butyl-bridged compound 3e-H4, showing an intramolecular proton transfer and the formation of a chinoidic “keto-amine” structure. The dicatechol derivatives 3b–g-H4 form dinuclear triple-stranded helicates M4[(3)3Ti2] with titanium(IV) ions in the presence of alkali-metal carbonate. For the phenyl- and the trans-1,4-cyclohexyl-bridged complexes, K4[(3b)3Ti2] and Na4[(3f)3Ti2], X-ray structures were obtained.

Graphical abstract: Dicatechol-diimines: easily accessible ligands for the self-assembly of dinuclear triple-stranded helicates

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Publication details

The article was received on 18 Sep 2003, accepted on 27 Oct 2003 and first published on 17 Nov 2003


Article type: Paper
DOI: 10.1039/B311483J
Citation: Dalton Trans., 2004,0, 37-43
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    Dicatechol-diimines: easily accessible ligands for the self-assembly of dinuclear triple-stranded helicates

    M. Albrecht, I. Janser, S. Kamptmann, P. Weis, B. Wibbeling and R. Fröhlich, Dalton Trans., 2004, 0, 37
    DOI: 10.1039/B311483J

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