Issue 33, 2007
From the journal:

Dalton Transactions

The novel sandwich-type heteropolyoxotungstates [M2Bi2(β-B-MW9O34)2]14− (M = CoII, ZnII): β-type dimeric heteropolyanions with a transition metal as the central heteroatom and BiIII and M as linking atoms†‡

Ying Liu,a   Bin Liu,a   Ganglin Xue,*a   Huaiming Hu,a   Feng Fub  and  Jiwu Wangb  

* Corresponding authors

a Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi'an, China
E-mail: xglin707@163.com

b Shaanxi Key Laboratory of Chemical Reaction Engineering, Yanan University, Yan'an, Shaanxi, China

Abstract

Two new sandwich-type heteropolyoxometalates, Na14[Co2Bi2(β-B-CoW9O34)2]·48H2O (1) and Na14[β-B-Zn2Bi2(ZnW9O34)2]·51H2O (2), have been synthesized at pH = 7.5–8 and characterized by elemental analysis, IR, UV-vis, TG-DSC and electrochemistry. Structural analysis indicates that both polyanions, M2Bi2(β-B-MW9O34)2]14− (M = CoII and ZnII), are isomorphic and consist of two unprecedented [β-B-MW9O34]12− subunits linked by two MII and two BiIII which are coplanar. The polyanions are also the first examples of dimeric heteropolyanions with BiIII only as the second (linking) heteroatom and the transition metals (CoII or ZnII) as the first and second heteroatoms as well. The lower absorption of ν(W–Od) (915 cm−1) in the IR is a simple and feasible judgment of sandwich-type polyanions with a transition metal ion as a central heteroatom.

Graphical abstract: The novel sandwich-type heteropolyoxotungstates [M2Bi2(β-B-MW9O34)2]14− (M = CoII, ZnII): β-type dimeric heteropolyanions with a transition metal as the central heteroatom and BiIII and M as linking atoms

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Article information

DOI
https://doi.org/10.1039/B706018A
Article type
Paper
Submitted
20 Apr 2007
Accepted
25 Jun 2007
First published
25 Jul 2007

Dalton Trans., 2007, 3634-3639

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The novel sandwich-type heteropolyoxotungstates [M2Bi2(β-B-MW9O34)2]14− (M = CoII, ZnII): β-type dimeric heteropolyanions with a transition metal as the central heteroatom and BiIII and M as linking atoms

Y. Liu, B. Liu, G. Xue, H. Hu, F. Fu and J. Wang, Dalton Trans., 2007, 3634 DOI: 10.1039/B706018A

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