نتایج جستجو برای: polyoxometalates
تعداد نتایج: 613 فیلتر نتایج به سال:
Arylimido Lindqvist polyoxometalates (POMs) are shown to be effective acceptors for two-photon absorption. In bis-POM systems the geometry–centrosymmetric or V-shaped–strongly influences optical and non-linear properties.
The redox chemistry of CeIV-polyoxometalates towards proteins is linked to the redox-active residues on protein surface. It can be tuned by adjusting reaction parameters, directly impacting its efficiency and selectivity as an artificial protease.
The Journal of Physical Chemistry C is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Correlating Acid Properties and Catalytic Function: A First-Principles Analysis of Alcohol Dehydration Pathways on Polyoxometalates Michael J. Janik, Josef Macht, Enrique Iglesia, and Matthew Neurock J. Phys. Chem. C, 2009, 113 (5), 1872-1885• DOI: 10.1021/...
We show that polyoxometalates (POMs) are an excellent redox-active acceptor on which to base high performance 2(nd) order non-linear optical (NLO) chromophores. This is demonstrated through three new organoimido-Lindqvist derivatives with HRS β0-values exceeding those of any dipolar organic system with comparable donor, π-system and absorption profile. Thus, organoimido POMs may provide a new g...
3. Soluble Metal Oxides 2459 3.1. Polyoxometalates 2459 3.2. Peroxotungstates 2459 3.3. Peroxomolybdates 2460 3.4. Methyltrioxorhenium 2461 3.5. Other Metal Oxides 2461 4. Metal Oxides Generated in Situ 2461 4.1. Selenium and Arsenic Compounds 2461 4.2. Simple Metal Salts 2462 5. Coordination Complexes 2463 5.1. Manganese Porphyrins 2463 5.2. Iron Porphyrins 2464 5.3. Manganese Salen Complexes ...
transition-metal-substituted (tms) polyoxometalates of the general formula [siw9m3o39], (where m = first row transition metal), has been synthesized and supported on anatase by sol–gel method under oil-bath condition. the tetrabutylammonium (tba) salts of the keggin-type polyoxotungstates [siw9m3o39], (m = vii, crii, mnii, feii coii and niii), proved to be green, reusable, and ...
The synthesis of [K(4.5) ⊂ (ClSn(II))8P8W48O184](17.5-), featuring Sn(II) ions in trigonal-pyramidal SnO2Cl environment coordinating to the two inner rims of the wheel-shaped {P8W48}-type polyoxotungstate(vi) archetype, showcases how high chloride ligand concentrations as well as the control of the polyanion solubility via electrolytes and evaporation rates are essential to prevent numerous com...
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