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RESEARCH ARTICLE
Contents Vol 63(1)

Transition Metal-Substituted Double Dawson-Type Polyoxotungstates and Their Supramolecular Structures

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

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

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

Australian Journal of Chemistry 63(1) 96-102 https://doi.org/10.1071/CH09145
Submitted: 11 March 2009  Accepted: 10 July 2009   Published: 8 January 2010

Abstract

Reactions of hexavacant polyoxotungstate [H2P2W12O48]12– ({P2W12}) with various transition metal cations lead to the isolation of three double Dawson-type polyoxotungstates: (C4H10NO)12Na2[α 1-MnP2W17O61]2·7H2O (1), [(CH3)2NH2]3K2Na11[α 1-CoP2W17O61]2·30H2O (2), and Na8K2[Fe2(H2O)8(Fe2P2W16O60)2]·41H2O (3). Compound 1 has a one-dimensional (1D) supramolecular architecture built from a Mn-substituted double Dawson-type polyoxoanion (DDTP) [α 1-MnP2W17O61]2 14–, morpholine, and lattice water molecules. Compound 2 has a 1D supramolecular structure built from the first Co-containing DDTP [α 1-CoP2W17O61]2 16– connected via H-bonding interactions. Compound 3 has a 3D supramolecular structure built from a Fe-substituted DDTP [Fe2(H2O)8(Fe2P2W16O60)2]10– and lattice water molecules. Electrocatalytic studies indicate that these three compounds all display electrocatalytic activity toward the reduction of nitrite.


Acknowledgement

This work was supported by the National Natural Science Foundation of China (No. 20701005) and the Postdoctoral station Foundation of Ministry of Education (No. 20060200002).


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