نتایج جستجو برای: salen complex

تعداد نتایج: 784399  

The preparation, characterization, and immobilization of cobalt (III) salen complex on CoFe2O4@SiO2 nanoparticle (CoFe2O4@SiO2@ Co(III) salen complex) are described. Co(III) salen complex loaded on ferrite cobalt-silica nanoparticle is characterized by TEM, SEM-EDX, VSM and FT-IR analyses. The efficiency of CoFe2O...

Journal: :iranian chemical communication 2015
mohammad ali nasseri batol zakerinasab sayyde kamayestani

mn(ii) salen complex immobilized on nano silicagel was prepared by incorporating mn(ii) salen complex into a nanosilica matrix and characterized by tga, xrd, atomic absorption spectroscopy and was successfully applied as catalyst for the oxidation of alcohols. oxidation of a series of alcohols in acetonitrile over immobilized mn(ii) salen complex using tetrabutylammonium peroxymonosulfate (tbao...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده علوم 1390

بازهای شیف به طور گسترده ای به عنوان لیگاند در شیمی کئوردیناسیون به کار می روند.همچنین این ترکیبات به عنوان کاتالیزور و در پزشکی به عنوان آنتی بیوتیک،آنتی تومور و ضد حساسیت کاربرد دارند.بازهای شیف به آسانی تهیه شده و تقریبا با همه یون های فلزی کمپلکس های پایداری تشکیل می دهند و باعث پایداری انواع یون ها ی فلزات واسطه در حالت های اکسیداسیون متفاوت می شوند. بسیاری از کمپلکس های باز شیف فعالیت کا...

Mn(II) salen complex immobilized on nano silicagel was prepared by incorporating Mn(II) salen complex into a nanosilica matrix and characterized by TGA, XRD, atomic absorption spectroscopy and was successfully applied as catalyst for the oxidation of alcohols. Oxidation of a series of alcohols in acetonitrile over immobilized Mn(II) salen complex using tetrabutylammonium peroxymonosulfate (TBAO...

خاتمیان اسکوئی, معصومه, قنبرپور, رقیه,

In this research, ZeoliteX (Na&6 [(AI02)&6(Si02)u>6].264H20), has been prepared from 2onouz Kaolin. Then VOX·Zeolite has been obtained by treatment of ZeoliteX with vanadyl sulfate solution .The Salen ligand has synthesized by condensation reaction of salisylaldehyde and ethylendiamine. The encapsulated complex, VO (salen), in zeolite pores was prepared by reaction of salen with VOX·Zeolit...

In this study, Co (III) salen complex was synthesized and immobilized onto the surface of Fe3O4@SiO2 magnetic nanoparticle. The heterogeneous nanocatalyst was characterized by different techniques including X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), nitrogen adsorption−desorption isotherm (BET), ...

Journal: :Physical chemistry chemical physics : PCCP 2011
Wen-Ping Peng Grant E Johnson Ivy C Fortmeyer Peng Wang Omar Hadjar R Graham Cooks Julia Laskin

Soft landing (SL) of mass-selected ions is used to transfer catalytically-active metal complexes complete with organic ligands from the gas phase onto an inert surface. This is part of an effort to prepare materials with defined active sites and thus achieve molecular design of surfaces in a highly controlled way. Solution-phase electrochemical studies have shown that V(IV)O(salen) reacts in th...

The complexation reaction between salen (Bis(salicylidene)ethylenediamine) and Cu(II) cations in methanol (MeOH), 2-propanol (2-PrOH), acetonitrile (AN), tetrahydrofuran (THF), and chloroform (CHCl3) as nonaqueous solvents at 25º C has been investigated. The stoichiometry and formation constants of complexes have been determined spectrophotometrically and conductometrically by method of continu...

Journal: :Chemical communications 2006
Yoritada Watanabe Azusa Namba Naoki Umezawa Masatoshi Kawahata Kentaro Yamaguchi Tsunehiko Higuchi

A new Mn(Salen) complex bearing an ureido group as an auxiliary that is three-dimensionally fixed by a cyclopentane ring fused to the Salen structure was developed. This compound exhibited considerably higher catalase-like activity than the original Mn(Salen), i.e., the cyclopentane-fused Mn(Salen) without the auxiliary, under near-physiological conditions.

Journal: :Dalton transactions 2011
Xing Meng Chao Qin Xin-Long Wang Zhong-Min Su Bo Li Qi-Hua Yang

Immobilization of the chiral salen-metal complex [Mn(III)(salen)(H(2)O)(2)ClO(4)] on the Keggin-type polyoxometalate (POM) skeletons leads to the isolation of POM derivatives functionalized with chiral salen-metal complexes, which represent the first examples of introducing chiral salen-metal complexes into the POM systems.

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