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Issue 32, 2012
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Metal-directed assembly of chiral bis-Zn(II) Schiff base structures

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Abstract

Tetra-Schiff bases derived from (chiral) bis-salphen ligand scaffolds furnish, upon metalation with appropriate metal reagents, their multinuclear structures with associated Zn(OAc)2 or Zn(OH)2 fragments. The tendency of retaining these salts was investigated using four different (chiral) bis-salphen scaffolds. The presence of the additional Zn ions was supported by NMR studies, mass determinations and X-ray crystallography showing in two cases the possible mode of coordination within these multinuclear structures. In one case, dimerization of the Zn3 complex leads to a unique hexanuclear Zn6 complex being a mixture of diastereoisomeric complexes as revealed by NMR spectroscopy.

Graphical abstract: Metal-directed assembly of chiral bis-Zn(ii) Schiff base structures

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Publication details

The article was received on 21 Mar 2012, accepted on 26 Jun 2012 and first published on 28 Jun 2012


Article type: Paper
DOI: 10.1039/C2DT30642E
Citation: Dalton Trans., 2012,41, 9766-9772
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    Metal-directed assembly of chiral bis-Zn(II) Schiff base structures

    M. V. Escárcega-Bobadilla, D. Anselmo, S. J. Wezenberg, E. C. Escudero-Adán, M. Martínez Belmonte, E. Martin and A. W. Kleij, Dalton Trans., 2012, 41, 9766
    DOI: 10.1039/C2DT30642E

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