Two Interesting One-Dimensional Chainlike Architectures Formed by Substituted Keggin Polyoxoanions and Novel Cobalt–Ethylenediamine Complexes

Yu Wang; Zhiming Zhang; Enbo Wang; Yanfei Qi; Song Chang

doi:10.1071/CH08171

RESEARCH ARTICLE

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Two Interesting One-Dimensional Chainlike Architectures Formed by Substituted Keggin Polyoxoanions and Novel Cobalt–Ethylenediamine Complexes

Yu Wang ^A , Zhiming Zhang ^A , Enbo Wang ^A ^B , Yanfei Qi ^A and Song Chang ^A

+ Author Affiliations

- Author Affiliations

^A Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jinlin, 130024, China.

^B Corresponding author. Email: wangenbo@public.cc.jl.cn; wangeb889@nenu.edu.cn

Australian Journal of Chemistry 61(11) 874-880 https://doi.org/10.1071/CH08171
Submitted: 21 April 2008 Accepted: 8 August 2008 Published: 5 November 2008

Abstract

Two novel supported heteropolytungstates, NaH₃[Co^III(en)₂(OH)SiW₁₁Co^IIO₃₉]·9.25H₂O 1 (en = ethylenediamine) and [Co(en)₂]₄[Co₄(Hen)₂Si₂W₁₈O₆₈]·H₂en·6H₂O 2 have been synthesized and characterized by single-crystal X-ray diffraction, electrochemistry, IR, and thermogravimetry. Compound 1 exhibits an interesting one-dimensional chainlike architecture assembled by bridged sodium ions that support monosubstituted Keggin polyoxoanions. To our knowledge, it represents the first example of a supported structure that consists of monosubstituted Keggin polyoxoanions and a novel interbridged, dinuclear Co metal unit. Compound 2 is constructed from trivacant Keggin polyanions linked through a tetrameric cobalt unit, which coordinates with organonitrogen ligands. Moreover, the sandwich-type polyoxoanions were connected by two [Co(en)₂] coordination complexes, respectively, and linked by Co²⁺ ions into a straight chain.

Acknowledgements

This work was financially supported by the Postdoctoral station Foundation of Ministry of Education (no. 20060200002), the Testing Foundation of North-east Normal University, and the Program for Changjiang Scholars and Innovative Research Team in University.

References

Two Interesting One-Dimensional Chainlike Architectures Formed by Substituted Keggin Polyoxoanions and Novel Cobalt–Ethylenediamine Complexes

Abstract

Acknowledgements

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