Solvothermal Treatment of Triangular Molybdenum(IV) Oxo Species – A New Approach for the Synthesis of New Molybdenum Oxo Clusters

Authors

  • Jun Zhao,

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China, Fax: +86-591-83705045
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  • Li Xu

    1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China, Fax: +86-591-83705045
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  • Dedicated to Professor John D. Corbett on the occasion of his 85th birthday

Abstract

An unprecedented solvothermal treatment of triangular molybdenum oxo clusters K2[Mo3O4(Hnta)3] (1, nta = nitrilotriacetate) and H2bipy[Mo3O4(C2O4)3(H2O)3] (2, bipy = 4,4′-bipyridine) was successfully established to prepare a series of new oligonuclear Mo(IV–VI) oxo clusters 35. Hydrothermal treatment of 1 in aqueous solution produced the hexanuclear cluster [MoIV6O10(bpy)4(Hnta)2]·10H2O (3, bpy = 2,2′-bipyridine). Solvothermal oxidation of 2 was performed in pyridine (py) to yield the unprecedented decanuclear mixed-valent oxo cluster [MoIV6MoVI4O24py8]·py (4). The further oxidized product [MoV8MoVI2O26py8]·2py (5) was obtained from a reaction at a higher temperature and for a longer duration. Clusters 35 have been characterized by X-ray crystallography, elemental analysis, and UV/VIS and IR spectroscopy.

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