نتایج جستجو برای: Polyoxometallates
تعداد نتایج: 19 فیلتر نتایج به سال:
47 thereby facilitating reduction of polyoxometallates of these types. The concept of binodal orbital aromaticity in reduced early-transition-metal polyoxometallates may be related to their classification as mixed valence compounds. Robin and Day36 classify mixed valence compounds into the following three classes: Class I, fully localized corresponding to an insulator in an infinite system; Cla...
A series of porphyrin dimers have been prepared and characterized in order to form inclusion complexes with Lindqvist-type polyoxometallates. The synthesis the dimer has optimized can serve general purposes. formation monitored using spectroscopic methods moderate affinities logK assoc varying from 2.6 4.2 determined parameters governing examined.
A detailed theoretical analysis is performed on the X-ray absorption spectral changes occurring when a Keggin-type polyoxometalate reduced. Our demonstrates that reduction by 24 electrons leads to formation of 3 metal triangles containing 9 Mo-Mo bonds; lower than previously reported. By combining molecular dynamics (MD) simulations with deep neural network (DNN) for predicting near edge struct...
This review presents an overview of silver nanoparticles (Ag NPs) preparation by green synthesis approaches that have advantages over conventional methods involving chemical agents associated with environmental toxicity. Green synthetic methods include mixed-valence polyoxometallates, polysaccharide, Tollens, irradiation, and biological. The mixed-valence polyoxometallates method was carried ou...
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