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Journal of Coordination Chemistry Volume 56, 2003 - Issue 6
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Original Articles

A Novel Keggin Units-Supported Complex: Synthesis, Characterization and Crystal Structure of [(CH3)2NH2]6[Cu(DMF)4(GeW12O40)2] · 2DMF

Jing-Yang Niu Department of Chemistry, Henan University, Kaifeng, 475001, P.R. China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P.R. China
,
Qiu-Xia Han Department of Chemistry, Henan University, Kaifeng, 475001, P.R. China
&
Jing-Ping Wang Department of Chemistry, Henan University, Kaifeng, 475001, P.R. China
Pages 523-530 | Published online: 15 Sep 2010
 
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A novel hybrid compound, [(CH3)2NH2]6[Cu(DMF)4(GeW12O40 4-)2] [sdot] 2DMF, has been synthesized from H4GeW12O40 [sdot] n H2O, CuCl2 and N, N -dimethylformamide (DMF) in aqueous solution and characterized by elemental analysis, UV and IR spectra. Single crystal X-ray structure analysis shows that the crystal consists of a α-Keggin heteropolyanion-supported anion [Cu(DMF)4(GeW12O40 4-)2], two free N, N-dimethylformamide molecules, six protonated dimethylamine (DMA) molecules, and that the coordinating atoms of DMF are the oxygen atoms of C=O group. Thermal analysis indicates that the thermal stability of the GeW12O40 4- anion in the title compound is stronger than that in acid.

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