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RESEARCH ARTICLE

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Two New Multi-Manganese-Substituted Polyoxometalates

Zhiming Zhang ^A , Enbo Wang ^A ^B , Weilin Chen ^A and Huaqiao Tan ^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 60(4) 284-290 https://doi.org/10.1071/CH07019
Submitted: 23 January 2007 Accepted: 20 February 2007 Published: 26 April 2007

Abstract

Two new multi-manganese-substituted polyoxotungstates K₃Na₁₀H₃[{Mn^II(H₂O)}₂Mn^III₄(SiW₆O₂₆)(SiW₉O₃₄)₂]·26H₂O 1 and K₅Na₃[Mn^III₄(H₂O)₂(GeW₉O₃₄)₂]·18H₂O 2 have been successfully synthesized by the reaction of [β-XW₁₁O₃₆]^8– (X = Si, Ge) with MnCl₂ in the presence of potassium persulfate. Compound 1 consisted of two [B-α-SiW₉O₃₄]^10– units and a [B-SiW₆O₂₆] unit linked by two isolated tri-manganese clusters to construct a double-sandwich structure. Compound 2 consisted of two [B-α-GeW₉O₃₄]^10– units linked by a tetra-manganese cluster that was composed of four Mn³⁺ ions.

Acknowledgment

The authors thank the National Natural Science Foundation of China (20371011) for financial support.

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