Abstract
A novel organic-inorganic hybrid dimeric tungstoantimonate [Cu(H2O)4]{[Cu(bpy)] [Cu3(bpy)3(H2O)](SbW9O33)}2·15H2O (1) (bpy = 2, 2′-bipyridine) was synthesized by the metastable precursor [NaSb9W21O86]18−, which was further characterized by IR spectrum, thermogravimetric analysis (TGA), and X-ray single-crystal diffraction. Structural analysis revealed that 1 consists of the two trivacant organo-functionalized {[Cu(bpy)][Cu3(bpy)3(H2O)](SbW9O33)}− units linked together by one [Cu(H2O)4]2+ group resulting in a dimeric architecture. Magnetic property studies indicate that obvious antiferromagnetic interactions above 25 K and weak ferromagnetic coupling interactions below 25 K in these paramagnetic Cu(II) ions.
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