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Issue 22, 2013
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Merging catalysis and supramolecular aggregation features of triptycene based Zn(salphen)s

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Abstract

A series of trinuclear, triptycene-based metallosalphen complexes (M = Zn, Ni) have been prepared incorporating various peripheral substituents. The introduction of Zn metal centres into these triptycene based salphen ligands gives rise to cross-linking between different triptycene molecules through μ-phenoxo bridges between the Zn metal centres, and variation in the peripheral groups allows the control of the self-assembling properties as shown by UV-Vis titration data. The strong association of these trinuclear Zn3 complexes under relatively apolar conditions has been exploited to recover the complex after its application as a catalyst in the cycloaddition of carbon dioxide to 1,2-epoxyhexane. The catalysis results and recycling studies show that the co-catalyst structure is important for efficient recovery of the binary system, demonstrating that reversible supramolecular aggregation may become a useful tool for recycling homogeneous catalysts.

Graphical abstract: Merging catalysis and supramolecular aggregation features of triptycene based Zn(salphen)s

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Publication details

The article was received on 08 Jan 2013, accepted on 08 Feb 2013 and first published on 11 Feb 2013


Article type: Paper
DOI: 10.1039/C3DT00067B
Citation: Dalton Trans., 2013,42, 7962-7970
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    Merging catalysis and supramolecular aggregation features of triptycene based Zn(salphen)s

    D. Anselmo, G. Salassa, E. C. Escudero-Adán, E. Martin and A. W. Kleij, Dalton Trans., 2013, 42, 7962
    DOI: 10.1039/C3DT00067B

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