Two α2-Monozirconium-Substituted Dimeric Silicotungstates: Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers

Yue Lin Wang; Guo Yu Yang

doi:10.1007/s10876-019-01572-1

Two α₂-Monozirconium-Substituted Dimeric Silicotungstates: Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers

Yue Lin Wang, Guo Yu Yang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A novel di-Zr^IV-substituted sandwich-type silicotungstate (NH₄)₂(TMA)₆[Zr₂(μ-OH)₂(α-HSiW₁₁O₃₉)₂]·18H₂O (1, TMA = tetramethylammonium) and a previously unknown EDTA bridging mono-Zr^IV-substituted silicotungstate dimeric cluster (NH₄)₂(TMA)₆[(Zr₂EDTA)(α-HSiW₁₁O₃₉)₂]·26H₂O (2, EDTA = C₁₀H₁₄N₂O₈) have been synthesized under mild hydrothermal conditions and characterized by FTIR spectroscopy, elemental analysis, thermogravimetric analysis, single-crystal and powder X-ray diffraction. 1 and 2 contain a centrosymmetric polyoxoanion structures with two [α-SiW₁₁O₃₉]⁸⁻ units sandwiching a [Zr₂(μ-OH)₂]⁶⁺ cluster and [Zr₂EDTA]⁶⁺ moiety, respectively. The catalytic activities of 1 and 2 on oxygenation of thioethers by H₂O₂ were evaluated, showing that both 1 and 2 are excellent catalysts for the catalytic oxidation of thioethers to sulfoxides/sulfones.

Original language	English
Pages (from-to)	1115-1121
Number of pages	7
Journal	Journal of Cluster Science
Volume	30
Issue number	4
DOIs	https://doi.org/10.1007/s10876-019-01572-1
Publication status	Published - 15 Jul 2019

Keywords

Hydrothermal synthesis
Polyoxometalates
Thioethers oxidation
Zirconium substituted

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title = "Two α2-Monozirconium-Substituted Dimeric Silicotungstates: Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers",

abstract = "A novel di-ZrIV-substituted sandwich-type silicotungstate (NH4)2(TMA)6[Zr2(μ-OH)2(α-HSiW11O39)2]·18H2O (1, TMA = tetramethylammonium) and a previously unknown EDTA bridging mono-ZrIV-substituted silicotungstate dimeric cluster (NH4)2(TMA)6[(Zr2EDTA)(α-HSiW11O39)2]·26H2O (2, EDTA = C10H14N2O8) have been synthesized under mild hydrothermal conditions and characterized by FTIR spectroscopy, elemental analysis, thermogravimetric analysis, single-crystal and powder X-ray diffraction. 1 and 2 contain a centrosymmetric polyoxoanion structures with two [α-SiW11O39]8− units sandwiching a [Zr2(μ-OH)2]6+ cluster and [Zr2EDTA]6+ moiety, respectively. The catalytic activities of 1 and 2 on oxygenation of thioethers by H2O2 were evaluated, showing that both 1 and 2 are excellent catalysts for the catalytic oxidation of thioethers to sulfoxides/sulfones.",

keywords = "Hydrothermal synthesis, Polyoxometalates, Thioethers oxidation, Zirconium substituted",

author = "Wang, {Yue Lin} and Yang, {Guo Yu}",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2019",

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doi = "10.1007/s10876-019-01572-1",

language = "English",

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T2 - Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers

AU - Wang, Yue Lin

AU - Yang, Guo Yu

PY - 2019/7/15

Y1 - 2019/7/15

N2 - A novel di-ZrIV-substituted sandwich-type silicotungstate (NH4)2(TMA)6[Zr2(μ-OH)2(α-HSiW11O39)2]·18H2O (1, TMA = tetramethylammonium) and a previously unknown EDTA bridging mono-ZrIV-substituted silicotungstate dimeric cluster (NH4)2(TMA)6[(Zr2EDTA)(α-HSiW11O39)2]·26H2O (2, EDTA = C10H14N2O8) have been synthesized under mild hydrothermal conditions and characterized by FTIR spectroscopy, elemental analysis, thermogravimetric analysis, single-crystal and powder X-ray diffraction. 1 and 2 contain a centrosymmetric polyoxoanion structures with two [α-SiW11O39]8− units sandwiching a [Zr2(μ-OH)2]6+ cluster and [Zr2EDTA]6+ moiety, respectively. The catalytic activities of 1 and 2 on oxygenation of thioethers by H2O2 were evaluated, showing that both 1 and 2 are excellent catalysts for the catalytic oxidation of thioethers to sulfoxides/sulfones.

AB - A novel di-ZrIV-substituted sandwich-type silicotungstate (NH4)2(TMA)6[Zr2(μ-OH)2(α-HSiW11O39)2]·18H2O (1, TMA = tetramethylammonium) and a previously unknown EDTA bridging mono-ZrIV-substituted silicotungstate dimeric cluster (NH4)2(TMA)6[(Zr2EDTA)(α-HSiW11O39)2]·26H2O (2, EDTA = C10H14N2O8) have been synthesized under mild hydrothermal conditions and characterized by FTIR spectroscopy, elemental analysis, thermogravimetric analysis, single-crystal and powder X-ray diffraction. 1 and 2 contain a centrosymmetric polyoxoanion structures with two [α-SiW11O39]8− units sandwiching a [Zr2(μ-OH)2]6+ cluster and [Zr2EDTA]6+ moiety, respectively. The catalytic activities of 1 and 2 on oxygenation of thioethers by H2O2 were evaluated, showing that both 1 and 2 are excellent catalysts for the catalytic oxidation of thioethers to sulfoxides/sulfones.

KW - Hydrothermal synthesis

KW - Polyoxometalates

KW - Thioethers oxidation

KW - Zirconium substituted

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Two α₂-Monozirconium-Substituted Dimeric Silicotungstates: Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers

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