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Vardhan H.,Laboratory of Organometallics | Verpoort F.,Laboratory of Organometallics
Advanced Synthesis and Catalysis

The catalytic nature of self-assembled metal-organic polyhedra gives an entirely new dimension to the reactivity and properties of molecules within a well-defined confined space. Encapsulation of a range of guests brings about not only host-guest interactions but also gives rise to unusual reactivities with selectivity and stabilization of various reactive intermediates. This review briefly covers the synthesis of self-assembled metal-organic polyhedra and elaborates their influence in different chemical reactions as well as in the stabilization of unstable chemical species. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Vardhan H.,Laboratory of Organometallics | Vardhan H.,Wuhan University of Technology | Yusubov M.,Tomsk Polytechnic University | Verpoort F.,Laboratory of Organometallics | And 2 more authors.
Coordination Chemistry Reviews

Self-assembly is a potent synthetic tool that allowed chemists to design numerous complex structures, supramolecules of various shapes from relatively simple starting materials. Metal-organic polyhedra are a rising and promising member of the self-assembled supramolecule family possessing fascinating structures and functionalities directly deriving from the precursor units. During the last two decades, research in this field has been briskly progressed and it is now objective to exemplify various applications such as biomedical, catalysis, molecular sensing, gas adsorption and separation, and synthesis of metal-organic frameworks from polyhedra. This review will be focus on each and every application with various unprecedented examples and highlight few challenges still need to be address. © 2015 Elsevier B.V. Source

Vardhan H.,Laboratory of Organometallics | Vardhan H.,Wuhan University of Technology | Verpoort F.,Laboratory of Organometallics | Verpoort F.,Wuhan University of Technology | Verpoort F.,Incheon National University
Australian Journal of Chemistry

Metal-organic polyhedra are three dimensional discrete structures typically constructed by the self-assembly of metal ions and ligands. The synthesis and geometry of discrete structures entirely rely on the choice of metal ions, ligand constraints such as steric bulk, bend angle, and functionalities, and the nature of applied solvents. As a result, they provide tailorable internal volume and usually hydrophobic nature to the cavity that in turn makes them one of the prominent host molecules for a range of applications. This review highlights the intervention of ligand constraints, precisely bend angle (0°, 60°, 120°, and 180°), hydroxyl functionalities, and the role of concepts such as molecular panelling and subcomponent self-assembly in the synthesis of polyhedra.Journal compilation ©CSIRO 2015. Source

Younus H.A.,Laboratory of Organometallics | Su W.,Laboratory of Organometallics | Ahmad N.,Laboratory of Organometallics | Chen S.,Laboratory of Organometallics | Verpoort F.,Laboratory of Organometallics
Advanced Synthesis and Catalysis

Pincer-based catalysts possess an exceptional balance of stability versus reactivity, aspects of fundamental interest in catalyst design. This balance has been well-controlled by systematic ligand modifications along with the variation of the metal center. Ruthenium pincer complexes (RPCs), exhibit a versatile chemistry, serve as excellent precursors and find potential applications in many organic transformations. A large number of novel and valuable reactions has been developed using both stoichiometric and catalytic amounts of RPCs. Compared to the traditional ruthenium catalysts, pincer complexes often present high efficiency, selectivity and functional group tolerance. This review highlights different methodologies for the synthesis of RPCs and their catalytic applications for different reactions reported in the last decade. Additionally, the factors affecting the catalytic reactivity of the RPCs and the reaction mechanisms are discussed. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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