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RESEARCH ARTICLE
Contents Vol 63(4)

Giant Polytungstoarsenate Clusters Derived from New [As4W19O68(H2O)]14– Building Blocks

Song Chang A , Zhiming Zhang A , Yangguang Li A , Shuang Yao A and Enbo Wang A B
+ Author Affiliations
- Author Affiliations

A Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Ren Min Street No. 5268, Changchun, Jilin, 130024, China.

B Corresponding author. Email: wangeb889@nenu.edu.cn

Australian Journal of Chemistry 63(4) 680-686 https://doi.org/10.1071/CH09446
Submitted: 26 August 2009  Accepted: 18 December 2009   Published: 8 April 2010

Abstract

A new compound K8Na4[As4W19O69]·19.5H2O (1), which can be described as an extended structure of [As2W19O67(H2O)]14–, was synthesized and used as building blocks to construct the high nuclear polytungstoarsenate cluster K10Na8[(W13O28)(H2O)6(OH)4(AsW9O33)4]·56H2O (2). Polyoxoanion 2 is composed of four trivacant Keggin B-α-type [AsW9O33] units encapsulating a unique polytungstate cluster W13O32(OH)4(H2O)6, which has never observed in the polyoxometalate chemistry. Electrocatalytic studies indicate that compound 2 displays electrocatalytic activity toward the reduction of nitrate.


Acknowledgements

We acknowledge the Testing Foundation of North-east Normal University; the Ph.D. station Foundation of Ministry of Education (No. 20060200002).


References


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