Structure and Properties of Tungsten Peroxopolyoxo Complexes - Promising Catalysts for Organics Oxidation. I. Structure of Peroxocomplexes Studied During the Stepwise Synthesis of Tetra(diperoxotungsten)phosphate-tetra-n-butyl Ammonium Full article
| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Output data | Year: 2010, Volume: 332, Number: 1-2, Pages: 122-127 Pages count : 6 DOI: 10.1016/j.molcata.2010.09.007 | ||
| Tags | EXAFS and Raman scattering spectroscopy, Metal complex catalysis, Oxidation of cyclic alkenes and alcohols, Oxotungstates, Peroxopolyoxotungstates | ||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 09-03-00395 |
| 2 | Russian Foundation for Basic Research | 09-03-12317 |
| 3 | Президиум РАН | 5.7.3 |
Abstract:
Catalysis via metal complexes has been studied using EXAFS and Raman spectroscopy. Main polyoxo- and peroxopolyoxocomplexes of tungsten, resulting from the interaction of phosphorus tungsten heteropolyacid with hydrogen peroxide in water solutions, were investigated with regard to their form and structure. Interaction was shown to reduce the nuclearity of forming complexes with respect to their precursor – H3PW12O40. The symmetry of oxygen environment of tungsten was found to change, distances W–W remaining the same. After complex [Bun4N]3{PO4[WO(O2)2]4} is isolated, binuclear anion [W2O3(O2)4(H2O)2]2− stays in the solution. Raman scattering, EXAFS and IR spectroscopy show that isolated peroxocomplex in its crystal state has four nuclei, and most probably retains this structure being dissolved in acetonitrile.
Synthesized catalytic complex [Bun4N]3{PO4[WO(O2)2]4} was tested in oxidation of cyclic alkenes and alcohols with hydrogen peroxide. Complex [Bun4N]3{PO4[WO(O2)2]4} was proved to provide higher yields of mono- and dicarbonic acids in comparison to in situ synthesized catalyst.
Cite:
Pai Z.P.
, Kochubey D.I.
, Berdnikova P.V.
, Kanazhevskiy V.V.
, Prikhodʹko I.Y.
, Chesalov Y.A.
Structure and Properties of Tungsten Peroxopolyoxo Complexes - Promising Catalysts for Organics Oxidation. I. Structure of Peroxocomplexes Studied During the Stepwise Synthesis of Tetra(diperoxotungsten)phosphate-tetra-n-butyl Ammonium
Journal of Molecular Catalysis A: Chemical. 2010. V.332. N1-2. P.122-127. DOI: 10.1016/j.molcata.2010.09.007 WOS Scopus РИНЦ ANCAN OpenAlex
Structure and Properties of Tungsten Peroxopolyoxo Complexes - Promising Catalysts for Organics Oxidation. I. Structure of Peroxocomplexes Studied During the Stepwise Synthesis of Tetra(diperoxotungsten)phosphate-tetra-n-butyl Ammonium
Journal of Molecular Catalysis A: Chemical. 2010. V.332. N1-2. P.122-127. DOI: 10.1016/j.molcata.2010.09.007 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 4, 2010 |
| Accepted: | Sep 4, 2010 |
| Published online: | Sep 21, 2010 |
| Published print: | Nov 1, 2010 |
Identifiers:
| Web of science: | WOS:000284674300017 |
| Scopus: | 2-s2.0-78049273702 |
| Elibrary: | 16677764 |
| Chemical Abstracts: | 2010:1365039 |
| Chemical Abstracts (print): | 154:67111 |
| OpenAlex: | W2089604695 |