Topic
Polyoxometalate
About: Polyoxometalate is a research topic. Over the lifetime, 3493 publications have been published within this topic receiving 94123 citations. The topic is also known as: POM.
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TL;DR: In this article, a new strategy has been developed for the direct encapsulation of polyoxometalates (POMs) into MIL-101(Cr) using a one-pot approach, and no leaching is observed.
307 citations
306 citations
TL;DR: The coexistence of both the chiral directors and the oxidants within a confined space provided a special environment for the formation of reaction intermediates in a stereoselective fashion with high selectivity.
Abstract: Chiral metal–organic frameworks (MOFs) with porous and tunable natures have made them feasible for performing a variety of chemical reactions as heterogeneous asymmetric catalysts. By incorporating the oxidation catalyst [BW12O40]5– and the chiral group, l- or d-pyrrolidin-2-ylimidazole (PYI), into one single framework, the two enantiomorphs Ni-PYI1 and Ni-PYI2 were obtained via self-assembly, respectively. The channels of Ni-PYIs were enlarged through a guest exchange reaction to remove the cationic chiral templates and were well modulated with hydrophilic/hydrophobic properties to allow molecules of both H2O2 and olefin ingress and egress. The coexistence of both the chiral directors and the oxidants within a confined space provided a special environment for the formation of reaction intermediates in a stereoselective fashion with high selectivity. The resulting MOF acted as an amphipathic catalyst to prompt the asymmetric dihydroxylation of aryl olefins with excellent stereoselectivity.
302 citations
TL;DR: In this article, a review summarizes recent developments for homogeneous and heterogeneous liquid-phase oxidation of hydrocarbons with H 2 O 2 catalyzed by vanadium complexes and vanadium-based polyoxometalates.
301 citations
TL;DR: In polyoxometalate chemistry, a large variety of compounds, clusters and solid-state structures can be formed by linking together metal-oxygen building blocks as discussed by the authors, resulting for instance in the high-yield synthesis of inorganic superfullerenes and giant ring-shaped, electron-rich, mixed-valence polyoxomolybdates with nanosized cavities.
295 citations