کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1406889 | 1501876 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Syntheses, crystal structures and electrochemical properties of two new supramolecular compounds based on hexamolybdates and crown ethers Syntheses, crystal structures and electrochemical properties of two new supramolecular compounds based on hexamolybdates and crown ethers](/preview/png/1406889.png)
Two new supramolecular compounds based on hexamolybdates and crown ethers, [Na(Benzo-15-crown-5)(H2O)(CH3CN)]2Mo6O191 and [Na(Dicyclohexyl-18-crown-6)]2Mo6O192 have been synthesized and characterized by elemental analysis, IR, TG, single crystal X-ray diffraction and electrochemical analysis. There are dominantly the electrostatic interactions between the crown ether–Na+ complex cations and the Mo6O192− polyanions in the compounds. In 2, the Mo6O192− anions are packed in the AB…AB layers along the c axis and the nearest Ot…Ot distances of neighboring Mo6O192− anions in the A layers are shorter than those in the B layers. The POM–crown ether supramolecular compounds have been used as the bulk-modifier to fabricate the chemically modified carbon paste electrodes (MCPE) successfully. They display well-defined cyclic voltammograms with three two-electron reversible redox couples in acidic aqueous solution, electrocatalytic activities toward the reduction of hydrogen peroxide and good stability due to their insolubility.
Journal: Journal of Molecular Structure - Volume 888, Issues 1–3, 15 October 2008, Pages 337–343