A {Co4O4} Cubane Incorporated within a Polyoxoniobate Cluster |
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| Authors: | Zhijie Liang Dr Dongdi Zhang Dr Pengtao Ma Prof Jingyang Niu Prof Jingping Wang |
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| Institution: | Key Laboratory of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004 (P. R. China), Fax: (+86)?371‐23886876 |
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| Abstract: | A novel octacobalt‐containing polyoxoniobate, Na6K12H2Co8O4(Nb6O19)4]?39 H2O, has been prepared by a combination of hydrothermal and diffusion methods. The polyanion H2Co8O4(Nb6O19)4]18? incorporates a tetrameric assembly of Lindqvist‐type Nb6O19]8? fragments trapping a {CoII4CoIII4} cluster which comprises a central {CoIII4O4} cubane core, surrounded by another four CoII ions linkers. Furthermore, magnetic measurements show that the compound exhibits antiferromagnetic interactions. |
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| Keywords: | cubanes magnetism mixed‐valence polyoxometalates transition metals |
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