کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1311758 | 975353 | 2006 | 8 صفحه PDF | دانلود رایگان |
A novel bifunctionalized arylimido derivative of hexamolybdate, (Bu4N)2[Mo6O17(NAr)2] [Ar = 2,6-(CH3)2C6H3] (1), in which the two 2,6-dimethylaniline groups are bounded to hexamolybdate at the cis positions, was synthesized by a facile reaction of α-octamolybdate with 2,6-dimethylaniline using DCC as a dehydration agent. The existence of strong non-typical C–H⋯O hydrogen bonds plays an important role in crystal structure stabilization of compound 1. The results of fluorescence spectra show that the formation of a covalent bond between 2,6-dimethylaniline molecule and hexamolybdate could efficiently quench the fluorescence intensity of 2,6-dimethylaniline molecule, with a fluorescence quencher efficiency of 87.7%. Thermal analysis results indicate that two substituted 2,6-(CH3)2C6H3 molecules bonding to the same cluster dissociated at different temperature, in well agreement with the different MoN bond length in compound 1. The electrochemical behavior of modified 1-CPE has been studied in detail. Compared with the conventional polyoxometalate (POM)-modified electrode, 1-CPE presents a merit of remarkable stability over 500 cycles due to the insolubility of the POM nanoparticles, which is especially important for practical applications.
A arylimido derivative of hexamolybdate, (Bu4N)2[Mo6O17(NAr)2] [Ar = 2,6-(CH3)2C6H3] (1), was synthesized by a facile reaction of α-octamolybdate with 2,6-dimethylaniline. The existence of strong non-typical C–H⋯O hydrogen bonds plays an important role in crystal structure stabilization and the formation of a covalent bond between 2,6-dimethylaniline molecule and hexamolybdate could efficiently quench the fluorescence intensity of 2,6-dimethylaniline molecule.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 359, Issue 2, 20 January 2006, Pages 451–458