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We report the synthesis, plus structural and spectroscopic characterization, of a plutonium(IV) complex with the polyoxometalate WO. The complex was isolated as Cs[Pu(WO)]·CsCl·6.5HO, with the tetravalent actinide cation sandwiched between two lacunary polyoxotungstate anions. It represents a rare case of a POM compound with plutonium and also the first Peacock-Weakley type complex of plutonium.
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http://dx.doi.org/10.1039/d5cc03481g | DOI Listing |
ChemSusChem
September 2025
Institute of Technical and Macromolecular Chemistry, University of Hamburg, Bundesstraße 45, 20146, Hamburg, Germany.
This article presents an advanced iteration of the polyoxometalate (POM)-Ionosolv concept to generate biobased methyl formate in high yield and a bleached cellulose pulp from lignocellulosic biomass in a single-step operation by using redox-balanced POM catalysts and molecular oxygen in alcoholic ionic liquid (IL) mixtures. The performance of the three Ionosolv-ILs triethylammonium hydrogen sulfate ([TEA][HSO]), N,N-dimethylbutylammonium hydrogen sulfate ([DMBA][HSO4]), and tributylmethylphosphonium methyl sulfate ([TBMP][MeSO]), mixed with methanol (MeOH) (30/70 wt%), is evaluated by methyl formate yield from extracted hemicellulose and lignin as well as purity of the bleached cellulose pulp in the presence of various Keggin-type POMs. The redox-balanced HPVMnMoO POM catalyst in [TBMP][MeSO]/MeOH emerge as the most effective combination, achieving 20% methyl formate yield from commercial beech wood.
View Article and Find Full Text PDFChemistry
September 2025
Institute of Visual Computing, Graz University of Technology, Inffeldgasse 16c, Graz, 8010, Austria.
Polyoxometalates (POMs) are nanoscale, structurally versatile metal-oxo clusters with emerging applications in sustainability, energy, nanoelectronics, and life science technologies. Owing to their structural complexity, some all-inorganic POMs are often perceived as serendipitous outcomes from self-assembly processes, which poses challenges for scalable rational design. From this perspective, we therefore examine how the development of POM informatics and, more generally, data-driven POM exploration can pave the way for the molecular engineering of new POM-based materials targeting customized applications.
View Article and Find Full Text PDFInorg Chem
September 2025
Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, China.
Selective oxidation of benzylic C(sp)-H bonds to ketones is critical to the production of fine chemicals but typically requires toxic/precious metal catalysts under harsh conditions. While iron-based complexes have recently served as catalysts for photocatalytic C-H bond activation, most systems operate via homogeneous catalysis. Developing a light-driven strategy under visible light with O as an oxidant is of major importance.
View Article and Find Full Text PDFInorg Chem
September 2025
Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States.
Neptunium exhibits truly unique chemistry as its speciation is dominated by the neptunyl(V) ion (NpO). Here, we describe the spontaneous destabilization and reduction of neptunyl(V) via complexation to the Keggin-type polyoxometalate (POM) ligand PWO. The POM-mediated reduction of NpO does not require any reducing agent and occurs within minutes, at room temperature, and in aqueous solution.
View Article and Find Full Text PDFInorg Chem
September 2025
College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, P. R. China.
The selective oxidation of benzylic C-H bonds to C═O bonds is an economical strategy to produce aromatic ketones and aldehydes directly. However, the activation of C-H bonds is challenging due to their high bond energy. In this work, two isostructural three-dimensional (3D) Wells-Dawson-type polyoxometalate (POM)-based metal-organic complexes (POMOCs), [Cu(L)(PMoO)(HO)]·16HO () and [Cu(L)(PWO)(HO)]·14HO () (L = ,'-(ethane-1,2-diyl)bis(pyrazine-2-carboxamide)) were synthesized through the self-assembly of Wells-Dawson-type POMs with Cu and a flexible dipyrazine-dicarboxamide ligand L under hydrothermal conditions, which were structurally characterized by infrared spectroscopy (IR) and powder X-ray diffraction (PXRD).
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