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Unveiling of a Trinuclear Cyclic Peroxidovanadate: A Potential Oxidant in Vanadium-Catalyzed Reactions

The first peroxidovanadium trimer was prepared in the form of its tetrabutylammonium salt, (NBu4)3[V3O3(O2)6]·2H2O. Its X-ray structure analysis revealed a unique cyclic structure of the [V3O3(O2)6]3– ion incorporating the yet unobserved μ3-η2:η1:η1 coordination mode of one of its peroxido ligands....

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Published in:	Inorganic chemistry 2015-07, Vol.54 (13), p.6306-6311
Main Authors:	Krivosudský, Lukáš, Schwendt, Peter, Gyepes, Róbert
Format:	Article
Language:	English
Subjects:	Aqueous solutions Formations Ligands Oligomers Solvents Structural analysis Trimers X-rays
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container_end_page	6311
container_issue	13
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container_title	Inorganic chemistry
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creator	Krivosudský, Lukáš Schwendt, Peter Gyepes, Róbert
description	The first peroxidovanadium trimer was prepared in the form of its tetrabutylammonium salt, (NBu4)3[V3O3(O2)6]·2H2O. Its X-ray structure analysis revealed a unique cyclic structure of the [V3O3(O2)6]3– ion incorporating the yet unobserved μ3-η2:η1:η1 coordination mode of one of its peroxido ligands. While relatively stable in nonaqueous solvents, the [V3O3(O2)6]3– ion quickly decomposes in diluted aqueous solutions. A higher vanadium concentration or a higher CH3CN content in the mixed CH3CN/H2O solvent facilitates the formation of oligomers [V2O2(O2)4(H2O)]2– and [V3O3(O2)6]3–. 51V NMR investigations indicated that the trinuclear species is incorporated in vanadium-catalyzed oxidations in the presence of H2O2.
doi_str_mv	10.1021/acs.inorgchem.5b00600
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subjects	Aqueous solutions Formations Ligands Oligomers Solvents Structural analysis Trimers X-rays
title	Unveiling of a Trinuclear Cyclic Peroxidovanadate: A Potential Oxidant in Vanadium-Catalyzed Reactions
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