Abstract
A new inorganic–organic hybrid complex, Na 2[{Ag 10(NC 5H 4COO) 8(H 2O) 6}(SiW 12O 40)] ( 1), has been successfully synthesized from [SiW 12O 40] 4− anions, Ag + ions and 1,3-bis(4-pyridyl)propane under hydrothermal conditions and characterized by elemental analyses, IR spectroscopy, TG analyses, and single-crystal X-ray diffraction. In complex 1, each [SiW 12O 40] 4− anion connects with six Ag atoms and in turn each Ag atom links to three [SiW 12O 40] 4− anions, leading to a (6, 3) layer. Such (6, 3) layers are arranged in parallel and further linked by [Ag(H 2O)(NC 5H 4COOH) 2] − fragments to generate a 3D framework. The most striking feature in this work is that 1,3-bis(4-pyridyl)propane converses to isonicotinic acid in the synthetic reaction of 1, which may be induced by the combined function of Ag + ion and polyoxometalate.
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