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.

Hybrid Organic−Inorganic Polyoxometalate Compounds: From Structural Diversity to Applications

Abstract: Polyoxometalates (POMs) are discrete anionic metaloxygen clusters which can be regarded as soluble oxide fragments. They exhibit a great diversity of sizes, nuclearities, and shapes. They are built from the connection of {MOx} polyhedra, M being a d-block element in high oxidation state, usually VIV,V, MoVI, or WVI.1 While these species have been known for almost two centuries, they still attract much interest partly based on their large domains of applications. They play a great role in various areas ranging from catalysis,2 medicine,3 electrochemistry,4 photochromism,5 to magnetism.6 This palette of applications is intrinsically due to the combination of their added value properties (redox properties, large sizes, high negative charges, nucleophilicity...). Parallel to this domain, the organic-inorganic hybrids area has followed a similar expansion during the last 10 years. The concept of organic-inorganic hybrid materials * To whom correspondence should be addressed. E-mail: dolbecq@ chimie.uvsq.fr. Chem. Rev. 2010, 110, 6009–6048 6009

Polyoxometalates : from platonic solids to anti-retroviral activity

Abstract: Polyoxometalates: A Class of Compounds with Remarkable Topology.- A: Formation and Structure.- Equilibria of Polyoxometalates in Aqueous Solution.- Synthesis and Structural Chemistry of Novel Heteropolymolybdates and -tungstates.- Progress in Polytungstophosphate and -arsenate(V) Chemistry.- Crystal Structure Studies of Isopoly and Heteropoly Oxometalates. Structure of the Paradodecatungstate Molecule and Its Environment in Crystals.- Polyoxoanion-Supported Organometallic Complexes.- New Aspects of Non-Aqueous Polyoxometalate Chemistry.- Functionalization of Polyoxomolybdates: the Example of Nitrosyl Derivatives.- Polyoxoalkoxy Molybdenum and Vanadium Clusters.- Polyoxovanadates with Organic Ligands.- B: Spectroscopy and Magnetochemistry.- New Aspects of NMR Spectroscopy of Polyoxometalates.- Polyoxotungstates with Lone-Pair Assembling Atoms: Part 2: 183W NMR Structural Study of the Inorganic Cryptates [MAs4W40O140](28-n)- and [MSb9W21O86](19-n)-(Mn+ = Alkaline or Alkaline Earth Cation).- Blue Electron Distributions in Diamagnetic Reduced Heteropoly Tungstates. Insights Concerning Conduction Pathways and Spin Coupling Patterns. 183W NMR Chemical Shift Calculations.- Interactions between Delocalized and Localized Electrons in Heteropoly Blues Containing Paramagnetic Transition Metals. Magnetic Susceptibility and NMR Studies.- Polyoxovanadates: The Missing Link between Simple Paramagnets and Bulk Magnets?.- Molecular Magnetic Materials from Polyoxometalates.- The Use of Polyoxometalates in Charge Transfer Salts.- C: Applications-Catalysis and Biology.- Catalytic Chemistry of Solid Polyoxometalates and Their Industrial Applications.- Polyoxoanions in Homogeneous Catalysis: Polyoxoanion-Supported, Atomically-Dispersed Iridium, [(l,5-COD)Ir-P2W15Nb3O62]8-.- Palladium and Phosphomolybdovanadate Catalyzed Olefin Oxidation to Carbonyls.- Mixed Addenda Phosphomolybdovanadates as Catalysts for Oxidations Dioxygen and Hydrogen Peroxide.- Role of Vanadium in Oxidation Catalysis by Heteropolyanions.- Photocatalytic Processes by Polyoxometalates. Splitting of Water. The Role of Dioxygen.- Polyoxometalates for Molecular Devices: Antitumor Activity and Luminescence.- Polyoxometalates in Catalytic Selective Homogeneous Oxygenation and Anti-HIV Chemotherapy.- Of Therapy, Toxicity and Tungstates: The Anti-Retroviral Pharmacology of Polyoxometalates.- Polyoxometalates in AIDS Therapy.- Interactions of Oxovanadates and Selected Oxomolybdates with Proteins.

Mononuclear lanthanide single-molecule magnets based on polyoxometalates.

Abstract: [ErW10O36]9− is the first polyoxometalate behaving as a single-molecule magnet (SMM). It shows frequency-dependent out-of-phase magnetization and a thermally activated single relaxation process with an effective barrier of 55.8 K. This single lanthanide ion polyoxometalate is the inorganic analogue of the bis(phthalocyaninato)lanthanide SMMs, both exhibiting very similar ligand field symmetries around the lanthanide ion (idealized D4d). It is chemically stable and offers new avenues for organization and processing of single-molecule magnets. Furthermore, it can be made free from nuclear spins and opens the possibility to be used for studies of decoherence on unimolecular qubits.

Polyoxometalate chemistry : from topology via self-assembly to applications

Abstract: Introduction to Polyoxometalate Chemistry: From Topology via Self-Assembly to Applications M.T. Pope, A. Muller. Synthetic Strategies. 1. Rational Approaches to Polyoxometalate Synthesis R.J. Errington. 2. Functionalization of Polyoxometalates: Achievements and Perspectives A. Proust, R. Villaneau. 3. From the First Sulfurated Keggin Anion to a New Class of Compounds Based on the [M2O2S2 2+ Building Block M-Mo,W E. Cadot, et al. 4. Organometallic Oxometal Clusters A. Proust, et al. Structures: Molecular and Electronic. 5. Spherical (Icosahedral) Objects in Nature and Deliberately Constructable Molecular Keplerates: Structural and Topological Aspects O. Delgado, et al. 6. Synthesis and Crystal Structure Studies of Novel Selenium- and Tellurium-Substituted Lacunary Polyoxometalates B. Krebs, et al. 7. Vibrational Spectroscopy of Heteropoly Acids H. Ratajczak, et al. 8. Bond-Stretch Isomerism in Polyoxometalates? M.-M. Rohmer, et al. 9. Quantum-Chemical Studies of Electron Transfer in Transition-Metal Substituted Polyoxometalates S.A. Borshch, H. Duclusaud. Solution Equilibria and Dynamics. 10. Aqueous Peroxoisopolyoxometalates O.W. Howarth, et al. 11. Molybdate Speciation in Systems Related to the Bleaching of Kraft Pulp F. Taube, et al. 12. NMR Studies of Various Ligands Coordinated to Paramagnetic Polyoxometalates B.A. Kim, H. So. From Discrete Clusters to Networks and Materials. 13. Molecular Aspect of EnergyTransfer from Tb3+ to Eu3+ in the Polyoxometalate Lattices: An Approach for Molecular Design of Rare-Earth Metal-Oxide Phosphors T. Yamase. 14. Conducting and Magnetic Organic / Inorganic Molecular Materials Based on Polyoxometalates L. Ouahab, et al. 15. Molecular Materials From Polyoxometalates J.J. Borras-Almenar, et al. 16. Framework Materials Composed of Transition Metal Oxide Clusters M.I. Khan. 17. Perspectives in the Solid State Coordination Chemistry of the Molybdenum Oxides P.J. Hagrman, et al. 18. Polyoxometalate Clusters in a Supramolecular Self-Organized Environment: Steps Towards Functional Nanodevices and Thin Film Applications D.G. Kurth, D. Volkmer. 19. Polyoxometalate Chemistry: A Source for Unusual Spin Topologies D. Gatteschi, et al. 20. Heteropolyanions: Molecular Building Blocks for Ultrathin Oxide Films J.D. Powell, et al. Applications: Catalysis, Biological Systems, Environmental Studies. 21. Selective Oxidation of Hydrocarbons with Hydrogen Peroxide Catalyzed by Iron-substituted Silicotungstates N. Mizuno. 22. Aerobic Oxidations Catalyzed by Polyoxometalates A.M. Khenkin, et al. 23. Polyoxoanions in Catalysis: From Record Catalytic Lifetime Nanocluster Catalysis to Record Catalytic Lifetime Catechol Dioxygenase Catalysis R.G. Finke. 24. Ribosomal Crystallography and Heteropolytungstates D. Janell, et al. 25. Photocatalytic Decontamination by Polyoxometalates A. Hiskia, et al. Index.