Issue 8, 2012
From the journal:

CrystEngComm

Two organic–inorganic hybrid 1-D and 3-D polyoxotungstates constructed from hexa-CuII substituted sandwich-type arsenotungstate units†

Junwei Zhao,*a   Dongying Shi,a   Lijuan Chen,ab   Xiaomeng Cai,a   Zhiqiao Wang,a   Pengtao Ma,a   Jingping Wanga  and  Jingyang Niu*a  

* Corresponding authors

a Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan, P. R. China
E-mail: zhaojunwei@henu.edu.cn, jyniu@henu.edu.cn
Fax: (+86) 378-3886876

b Basic Experiment Teaching Center, Henan University, Kaifeng, Henan, P. R. China

Abstract

Two organic–inorganic hybrid hexa-CuII substituted sandwich-type arsenotungstates [Cu(en)2(H2O)]2 [Cu(en)2][Cu6(en)2(H2O)2(B-α-AsW9O34)2]·en·9H2O (1) and [Cu(dap)2]3[Cu6(dap)2(H2O)2(B-α-AsW9O34)2]·4H2O (2) (en = ethylenediamine, dap = 1,2-diaminopropane) have been hydrothermally prepared and structurally characterized by elemental analysis, IR spectra, powder X-ray diffraction (XRD), thermogravimetric analysis (TGA) and single-crystal X-ray diffraction. 1 is an organic–inorganic hybrid 1-D chain constructed from hexa-CuII substituted [Cu6(en)2(H2O)2(B-α-AsW9O34)2]6− sandwich-type units and [Cu(en)2]2+ linkers whereas 2 shows the six-connected 3-D extended framework built by hexa-CuII sandwiched [Cu6(dap)2(H2O)2(B-α-AsW9O34)2]6− units and [Cu(dap)2]2+ connectors. To our knowledge, 1 and 2 represent the first organic–inorganic hybrid high-dimensional arsenotungstates containing hexa-CuII sandwiched polyoxometalate units. The results of magnetic susceptibility measurements demonstrate that 1 and 2 indicates the ferromagnetic couplings within CuII centers. The photocatalytic measurements illustrate that 1 and 2 can to some extent inhibit the photodegradation of rhodamine-B (RhB).

Graphical abstract: Two organic–inorganic hybrid 1-D and 3-D polyoxotungstates constructed from hexa-CuII substituted sandwich-type arsenotungstate units

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Article information

DOI
https://doi.org/10.1039/C2CE06298D
Article type
Paper
Submitted
29 Sep 2011
Accepted
24 Dec 2011
First published
07 Feb 2012

CrystEngComm, 2012,14, 2797-2806

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Two organic–inorganic hybrid 1-D and 3-D polyoxotungstates constructed from hexa-CuII substituted sandwich-type arsenotungstate units

J. Zhao, D. Shi, L. Chen, X. Cai, Z. Wang, P. Ma, J. Wang and J. Niu, CrystEngComm, 2012, 14, 2797 DOI: 10.1039/C2CE06298D

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