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Issue 44, 2018
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A large, X-shaped polyoxometalate [As6Fe7Mo22O98]25− assembled from [AsMo7O27]9− and [FeMo4O19]11− moieties

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Abstract

A large X-shaped polyoxometalate, [As6Fe7Mo22O98]25− (1), has been synthesized and structurally characterized. The skeleton of 1 is composed of two monocapped hexavacant Keggin [AsMo7O27]9− units and two divacant Anderson [FeMo4O19]11− units fused together through a central Fe5O4 core and two μ4-As2O bridging units, resulting in a unique tetramer with C2h symmetry. The polyanion represents the largest iron-containing arsenomolybdate to date and it contains an unprecedented heptanuclear iron(III) cluster. The investigation of the magnetic properties shows that the Fe7 cluster exhibits an overall ferromagnetic interaction with a spin ground state of S = 7.5.

Graphical abstract: A large, X-shaped polyoxometalate [As6Fe7Mo22O98]25− assembled from [AsMo7O27]9− and [FeMo4O19]11− moieties

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Publication details

The article was received on 29 Jun 2018, accepted on 16 Oct 2018 and first published on 17 Oct 2018


Article type: Communication
DOI: 10.1039/C8DT02647E
Citation: Dalton Trans., 2018,47, 15661-15665
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    A large, X-shaped polyoxometalate [As6Fe7Mo22O98]25− assembled from [AsMo7O27]9− and [FeMo4O19]11− moieties

    P. Wu, Y. Zhang, C. Feng, B. Liu, H. Hu and G. Xue, Dalton Trans., 2018, 47, 15661
    DOI: 10.1039/C8DT02647E

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