Interdigitated Architectures Assembled from α-metatungstates and Lanthanide-organic Complexes
- Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
- Received 19 January 2013
- Accepted 25 March 2013
- Available online 2 April 2013
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Highlights
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Two compounds represent the first examples of interdigitated architectures assembled from POMs and lanthanide-organic complexes have been synthesized.
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The title compounds show a good electrocatalytic activity toward hydrogen peroxide molecules.
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The IR, UV spectra, and elemental analysis of the title compounds were studied in details.
Abstract
Two new compounds were constructed by isopolyanions and lanthanide-organic units, [Hdpdo]Ln(Hdpdo)2(H2O)6[H2W12O40]·nH2O (Ln = Ce and n = 17 for 1, Ln = Nd and n = 18 for 2, dpdo = 4,4'-dipyridine-N,N'-dioxide) were synthesized at room temperature and characterized by IR and UV spectra, elemental analysis and single-crystal X-ray diffraction analysis. Compounds 1 and 2 are isostructural, and in their stacking architectures there exist poly-pendant wave-like layers formed by discrete {Ln(Hdpdo)2(H2O)6[H2W12O40]}- fragments via π···π interactions, in which the [H2W12O40]6- (W12) clusters as pendants are orderly appended to wave crests, by covalent bonds between Ln cations of Ln(Hdpdo)2 and terminal oxygen atoms of W12. Adjacent layers mutually engage in a zipper-like pattern to result in a novel 3D interdigitated architecture, in which overhanging W12 clusters act as teeth. Furthermore, the electrochemical studies show that 1 has a good electrocatalytic activity toward reduction of hydrogen peroxide (H2O2) molecules.
