TY - JOUR
T1 - Two α2-Monozirconium-Substituted Dimeric Silicotungstates
T2 - Hydrothermal Synthesis, Structural Characterization and Catalytic Oxidation of Thioethers
AU - Wang, Yue Lin
AU - Yang, Guo Yu
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
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
UR - http://www.scopus.com/inward/record.url?scp=85065186324&partnerID=8YFLogxK
U2 - 10.1007/s10876-019-01572-1
DO - 10.1007/s10876-019-01572-1
M3 - Article
AN - SCOPUS:85065186324
SN - 1040-7278
VL - 30
SP - 1115
EP - 1121
JO - Journal of Cluster Science
JF - Journal of Cluster Science
IS - 4
ER -