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An Unprecedented M–O Cluster Constructed from Nanosized {[C<sub>5</sub>NH<sub>5</sub>]<sub>9</sub>[H<sub>31</sub>Mo<sup>V</sup><sub>12</sub>O<sub>24</sub>Co<sup>II</sup><sub>12</sub>(PO<sub>4</sub>)<sub>23</sub>(H<sub>2</sub>O)<sub>4</sub>]}<sup>2–</sup> Anions Exhibiting Interesting Nonlinear-Optical Properties

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A novel high-nuclear nanosized cluster modified by conjugated organic ligands (pyridine and imidazole), [C5NH5]8­[C3H5N2]2­{[C5NH5]9​­[H31Mo12O24Co12​­(PO4)23­(H2O)4]}·12H2O (1), has been successfully isolated under hydrothermal conditions and structurally characterized. Compound 1 consists of 12 CoII and 12 MoV ions linked by 23 {PO4} groups, exhibiting unprecedented nanosized ship-shaped clusters. The magnetic measurements reveal that compound 1 exhibits dominant antiferromagnetic interactions. Additionally, pyridine and imidazole ligands enhance the delocalized electron effects of clusters, and the third-order nonlinear-optical response of compound 1 is excellent.

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2016-11-15
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