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Inorganics 2015, 3(2), 295-308; doi:10.3390/inorganics3020295

Structure Transformation among Deca-, Dodeca- and Tridecavanadates and Their Properties for Thioanisole Oxidation

Department of Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
These authors contributed equally to this work.
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Academic Editors: Greta Ricarda Patzke and Pierre-Emmanuel Car
Received: 15 April 2015 / Revised: 1 May 2015 / Accepted: 11 June 2015 / Published: 17 June 2015
(This article belongs to the Special Issue Polyoxometalates)
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Abstract

The transformation of three types of polyoxovanadates, {(n-C4H9)4N}3[H3V10O28], {(n-C4H9)4N}4[V12O32] and {(n-C4H9)4N}3[V13O34] have been investigated according to the rational chemical equations, and the best transformation conditions were reported. By the reaction of [H3V10O28]3− with 0.33 equivalents of {(n-C4H9)4N}OH in acetonitrile at 80 °C, [V12O32]4− was formed with 92% yield. The reaction in nitroethane with 0.69 equivalents of p-toluenesulfonic acid gave [V13O34]3− with 91% yield. The 51V NMR observation of each reaction suggests the complete transformations of [H3V10O28]3− to [V12O32]4− and to [V13O34]3− proceeded without the formation of any byproducts and it provides the reliable synthetic route. Decavanadates were produced by the hydrolysis of [V12O32]4− or [V13O34]3−. While the direct transformation of [V13O34]3− to [V12O32]4− partly proceeded, the reverse one could not be observed. For the thioanisole oxidation, [V13O34]3− showed the highest activity of the three. View Full-Text
Keywords: polyoxometalates; structure transformation; dodecavanadate; tridecavanadate; thioanisole oxidation polyoxometalates; structure transformation; dodecavanadate; tridecavanadate; thioanisole oxidation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kikukawa, Y.; Ogihara, K.; Hayashi, Y. Structure Transformation among Deca-, Dodeca- and Tridecavanadates and Their Properties for Thioanisole Oxidation. Inorganics 2015, 3, 295-308.

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