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Issue 24, 2013
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Solvent-shielding allows the self-assembly of supramolecular 1D barium vanadate chains

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Abstract

A proof of principle study is reported which introduces a new synthetic route for the assembly of 1-dimensional barium-linked polyoxovanadate chains. Bulky coordinating solvents featuring a binding site and a blocking site are employed and allow the controlled linkage of decavanadate clusters, [V10O28]6−, by barium(II) centres. Using the bulky solvent N-methyl-2-pyrrolidone (NMP), it is shown that a complex supramolecular architecture, {[Ba(nmp)4(H2O)]2[H4V10O28]}{[Ba(nmp)3(H2O)2][H3V10O28]}2·2H2O·10 NMP} (1) can be accessed where mono- and dinuclear barium units link decavanadate clusters into a linear chain. Using N,N-dimethyl formamide (DMF), a less complex architecture, [(Ba(dmf)4]2[H2V10O28] (2), is formed where only dinuclear barium(II) linkages are observed. Theoretical Hirshfeld-analysis of the crystal lattices is used to examine the ‘shielding’ effect of the bulky ligands. ESI-mass-spectrometric studies give insight into potential fragments formed in solutions of 1 and 2.

Graphical abstract: Solvent-shielding allows the self-assembly of supramolecular 1D barium vanadate chains

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Publication details

The article was received on 26 Mar 2013, accepted on 03 May 2013 and first published on 09 May 2013


Article type: Paper
DOI: 10.1039/C3CE40536B
Citation: CrystEngComm, 2013,15, 4948-4955
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    Solvent-shielding allows the self-assembly of supramolecular 1D barium vanadate chains

    K. Kastner and C. Streb, CrystEngComm, 2013, 15, 4948
    DOI: 10.1039/C3CE40536B

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