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Issue 62, 2015
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Isolation and characterization of the [Ga2Al18O8(OH)36(H2O)12]8+ cluster: cationic variations on the Wells–Dawson topology

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Abstract

The structural chemistry of Group 13 polyoxometalates lags far behind related negatively charged transition metal species and limits the development of advanced materials. A novel heterometallic cluster [Ga2Al18O8(OH)36(H2O)12]8+ (Ga2Al18) has been isolated using a supramolecular approach and structurally characterized using single-crystal X-ray diffraction. Ga2Al18 represents the Wells–Dawson structure polycations and variations in the structural topology may be related to the initial stabilization of the Keggin isomer. DFT calculations on the related ε-Keggins (GaAl12 and Al13), Ga2Al18, and theoretical Al2Al18 clusters reveal similar features of electronic structure, suggesting additional heteroatom substitution in other isostructural clusters should be possible.

Graphical abstract: Isolation and characterization of the [Ga2Al18O8(OH)36(H2O)12]8+ cluster: cationic variations on the Wells–Dawson topology

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Publication details

The article was received on 13 Apr 2015, accepted on 26 Jun 2015 and first published on 29 Jun 2015


Article type: Communication
DOI: 10.1039/C5CC03069B
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Chem. Commun., 2015,51, 12467-12469

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    Isolation and characterization of the [Ga2Al18O8(OH)36(H2O)12]8+ cluster: cationic variations on the Wells–Dawson topology

    M. Fairley, K. W. Corum, A. Johns, D. K. Unruh, M. Basile, J. de Groot, S. E. Mason and T. Z. Forbes, Chem. Commun., 2015, 51, 12467
    DOI: 10.1039/C5CC03069B

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