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Synthesis and Structural Characterization of a New Two-dimensional Organic-Inorganic Hybrid Molybdoarsenate: [Cu(en)

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Synthesis and Structural Characterization of a New

Two-dimensional Organic-Inorganic Hybrid Molybdoarsenate:

[Cu(en)

2

]

2

[(CuO

6

)Mo

6

O

18

(As

3

O

3

)

2

]

Qiang Wua, Qiuxia Hanb,c, Lijun Chenc, Pengtao Mab, and Jingyang Niub

aMedical School, Henan University, Kaifeng 475001, P. R. China

bInstitute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China

cBasic Experimental Teaching Center, Henan University, Kaifeng 475004, P. R. China Reprint requests to Prof. Jingyang Niu. Fax: +86-378-2853650. E-mail: jyniu@henu.edu.cn Z. Naturforsch.2010,65b,163 – 167; received November 28, 2009

A new organic-inorganic hybrid molybdoarsenate constructed from a unit with two (As3O3) rings capping Anderson-type moieties, [Cu(en)2]2[(CuO6)Mo6O18(As3O3)2] (1) (en = ethylenediamine), has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction and ther- mogravimetric analysis. The compound crystallizes monoclinically, space groupP21/c, with unit cell dimensionsa= 9.1541(7),b= 19.6348(14),c= 14.5205(8) ˚A,β= 129.082(3)◦,V= 364.20(4) ˚A3,Z= 2,T = 296(2) K. Complex1represents the first example of a 2D network of a POM polymer where [(CuO6)Mo6O18(As3O3)2]4−building blocks are connected by complex fragments{Cu(en)2}2+. Key words:Polyoxometalate, Hydrothermal Synthesis, Crystal Structure, Anderson-type Unit

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