نتایج جستجو برای: polyoxometalate

تعداد نتایج: 904  

Journal: :Dalton transactions 2012
Chika Nozaki Kato Yusuke Morii Shota Hattori Ryuta Nakayama Yuki Makino Hidemitsu Uno

The synthesis and molecular structure of a monomeric diplatinum(II) complex composed of mono-lacunary α-Keggin polyoxometalate is described. The polyoxometalate, Cs(3)[α-PW(11)O(39){cis-Pt(NH(3))(2)}(2)]·8H(2)O (Cs-1), afforded by a stoichiometric reaction of mono-lacunary Keggin polyoxotungstate with cis-diamminedichloroplatinum(ii) in water, followed by crystallization from water, was obtaine...

2017
Hari Nair Jeffrey T. Miller E A. Stach Chelsey Baertsch Eric A. Stach Chelsey D. Baertsch

Understanding the structural and electronic mechanisms by which catalysts activate and deactivate during use is crucial to the intelligent design of more efficient chemical syntheses. Atomic resolution electron microscopy is used in conjunction with bulk characterization tools including as X-ray Diffraction (XRD), Ultraviolet–visible Diffuse Reflectance Spectroscopy (UV–vis DRS) and X-ray Absor...

2014
Juan Wang Xiaofeng Qu Yanfei Qi Jinhua Li Xiuling Song Li Li Dehui Yin Kun Xu Juan Li

Polyoxometalates are non-nucleoside analogs that have been proven to exhibit broad-spectrum antiviral activity. In particular, Cs2K4Na[SiW9Nb3O40].H2O 1 shows low toxicity and high activity against HBV. The preclinical pharmacokinetics of Compound 1 in rats were characterized by establishing and applying inductively coupled plasma-mass spectrometry method to determine the concentration of W in ...

Journal: :European Journal of Inorganic Chemistry 2022

A mixed-addenda W/Mo hybrid polyoxometalate cluster - K 6 [P 2 W 15 Mo O 61 (POC H 5 ) ] ( 1 was synthesized from the condensation of 10 and phenylphosphonic acid under acidic conditions. Single-crystal X-ray diffraction confirmed structure presence two centers in cap lacunary cluster. The electronic effects metal substitution were studied by cyclic voltammetry, spectroelectrochemistry electron...

Journal: :Catalysis Today 2022

The use of electrochemistry in organic synthesis (sometimes termed electro-organic synthesis, or just “electrosynthesis”) is a field that attracting ever-increasing attention on account its ability to deliver reaction outcomes cannot be achieved any other way and potential replace toxic and/or sacrificial reagents with cleanly-generated electricity. In the simplest incarnation an substrate unde...

Journal: :Dalton transactions 2008
Shou-Tian Zheng Jie Zhang Bing Li Guo-Yu Yang

A new polyoxovanadate [Zn2(dien)3][[Zn(dien)]2As4V16O42(H2O)] x 3H2O (1, dien = diethylenetriamine) has been hydrothermally synthesized and structurally characterized by EA, IR, TGA, magnetic measurement and single crystal X-ray diffraction. X-Ray diffraction analyses reveal that 1 exhibits the first [As4V16O42(H2O)]-containing polyoxometalate. In 1, the adjacent [As4V16O42(H2O)] clusters are l...

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