A New Polynuclear Copper-Complex-Substituted Tungstoarsenate(V)

作者：Tong Ruizhan; Liu Bin; Xue Ganglin^*; Hu Huaiming; Fu Feng; Wang Jiwu

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2010, 636(8): 1601-1605.

DOI：10.1002/zaac.200900509

• Polyoxotnetalates
• Tungstoarsenates
• Copper
• Hydrothermal synthesis
• Organic-inorganic hybrid composites

A new polynuclear copper-complex-substituted dimeric tungstoarsenate(V), H(2)[{Cu(2,2'-bPY)}(8) (H(2)O)(2)(AsW(9)O(34))(2)]center dot 2H(2)O (1) (2,2'-bpy = 2,2'-bipydine), was synthesized hydrothermally and its structure was determined by single-crystal X-ray diffraction. The title compound has Ci symmetry and consists of two trilacunary Keggin anions [alpha-AsW(9)O(34)](9-) supported by eight copper complex cations. The compound was also characterized by IR and fluorescence spectroscopy, TG analysis, and magnetic measurements. The emission spectrum of the compound in solid-state exhibits a redshift relative to those of Na(8)[A-HAsW(9)O(34)]center dot 11H(2)O and the free ligand 2,2'-bpy. Magnetic measurements of the compound indicate competing ferro- and antiferromagnetic intramolecular coupling among the Cu(II) atoms in the cluster anion.

• 出版日期2010
• 单位延安大学; 西北大学