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Polyoxovanadate catalysts for oxidation of 1-phenyl ethanol: From the discrete [V4O12]4− and [V10O28]6− anions, to the anionic [V6O17]n4n− coordination polymer

Abstract

Three polyoxovanadate-based hybrids {[Ru(phen)3]2[V4O12]}∙13H2O (1), [Ru(phen)3]2[V10O28]∙15H2O (2), and [Ru(phen)3]2[V6O17]Cl∙11H2O (3) (phen = 1,10-phenanthroline) were prepared under hydrothermal conditions, and characterized by electron paramagnetic resonance (EPR) spectroscopy, infrared spectroscopy (IR), powder X-ray diffraction (PXRD), thermogravimetric (TG) analysis, X-ray photoelectron spectroscopy (XPS), and single crystal X-ray diffraction analysis. Though, the structures of both the cyclic vanadate [V4O12]4− and the [V10O28]6− anions are well known, but interestingly a novel 1-Dimensional (1-D) coordination polymer [V6O17]n4n− anion is constructed from tetranuclear [V4O12]4− and dinuclear [V2O7]4− building blocks which are linked alternately through corner-shared oxygen atoms. Furthermore, the negative charge of the polyoxovanadate [V4O12]4−, [V10O28]6− and [V6O17]4− anions are balanced by two [Ru(phen)3]2+/3+ complexes cations respectively. The catalytic properties of compounds 1–3 for the oxidation of 1-phenyl ethanol by tert-butyl hydroperoxide (TBHP) were investigated, and the result demonstrates that 1 and 3 exhibited excellent catalytic activity for the oxidation of 1-phenyl ethanol under mild catalytic conditions.

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Publication details

The article was received on 25 Jul 2018, accepted on 11 Sep 2018 and first published on 11 Sep 2018


Article type: Paper
DOI: 10.1039/C8CE01237G
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Polyoxovanadate catalysts for oxidation of 1-phenyl ethanol: From the discrete [V4O12]4− and [V10O28]6− anions, to the anionic [V6O17]n4n− coordination polymer

    K. Wang, Q. Xu, P. Ma, C. Zhang, J. Niu and J. Wang, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01237G

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