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Original Articles

A transition-metal-templated 3-D supramolecular framework based on molybdenum–vanadium polyoxoanions

, , , , , , , & show all
Pages 394-405 | Received 25 Jun 2009, Accepted 14 Aug 2009, Published online: 19 Jan 2010
 

Abstract

A polyoxometalate [Co(phen)3][Co(en)3][Co(en)2(H2O)2][Co(en)2]0.5[O40(VIVO)2] · 6H2O (1) (en = ethylenediamine, phen = 1,10-phenanthroline) has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR, electron paramagnetic resonance, X-ray photoelectron spectroscopy, elemental analyses, and thermogravimetry. The structure is an interesting 3-D supramolecular network containing bi-capped Keggin-type molybdenum–vanadium clusters with transition metal complexes generated in situ under mild hydrothermal conditions. Compound 1 contains four different counteractions being coordinated complexes of cobalt. The magnetic properties of 1 have also been studied in the temperature range of 4–300 K, and its magnetic susceptibility obeys the Curie–Weiss law, showing ferromagnetic coupling.

Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 20571032).

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