نتایج جستجو برای: feiii determination
تعداد نتایج: 251385 فیلتر نتایج به سال:
The reaction of Fe(NCS)3 prepared in situ in MeOH with Hqsal-X (Hqsal-X = 5-X-N-quinolylsalicylaldimine) in CH2Cl2 yields the FeIII complexes, [Fe(qsal-X)2]NCS·solvent (X = F 1; X = Cl, 2, Br, 3 solvent = MeOH; X = I, solvent = 0.25CH2Cl2·0.5MeOH 4) in moderate to good yields. IR spectroscopy confirms that NCS− acts as a counteranion only and that the qsal-X ligand is bound to the FeIII centre....
The massive worldwide use of antibiotics leads to water pollution and increasing microbial resistance. Hence, the removal antibiotic residues is a key issue in remediation. Here, we report solar light-assisted oxidative degradation ciprofloxacin (CPF), using H2O2 aqueous solution, catalyzed by iron(III) chelated cross-linked chitosan (FeIII-CS-GLA) immobilized on glass plate. FeIII-CS-GLA catal...
This article reviews investigations on the formation of inhomogeneous ferrous (FeII) and ferric (FeIII) oxides in aqueous solution. These globally abundant materials are important extensive fields research including corrosion steels, mineralogy, environmental remediation, biochemistry. Iron polycations consisting FeII FeIII ions bridged by hydroxyl groups oxyanions. Solution conditions such as ...
The tetradecanuclear FeIII pivalate nanocluster [Fe14O10(OH)₄(Piv)18], comprising a new type of metal oxide framework, has been solvothermally synthesized from a hexanuclear iron pivalate precursor in dichlormethane/acetonitrile solution. Magnetic measurements indicate the presence of very strong antiferromagnetic interactions in the cluster core.
The demethylation of histone H3 lysine 27 is catalyzed by the FeII/2-oxoglutarate-dependent demethylase from Class 6 (KDM6). KDM6 family (KDM6A/KDM6B) catalyzes trimethylated H3K27, which involves iron-oxo intermediates, including superoxo (FeIII−OO⋅−), Ferryl (FeIV=O), and hydroxo (FeIII−OH) complexes. study determines role second coordination sphere long-range interacting residues in KDM6′s c...
Six new mononuclear [FeIII(LBr,Cl)X]-complexes (LBr,Cl is the dianionic penta-N3O2-dentate Schiff base ligand N,N?-bis(2’-hydroxy-3-bromo-5-chlorobenzylidene)-1,6-diamino-3-azahexane; X: Cl?, N3?, NCO?, NCS?, NCSe?, CN?) were synthesized and their structures, magnetic electrochemical properties studied. Structure analysis measurements showed that [FeIII(LBr,Cl)CN] in low spin state other five c...
Structurally nanoengineered antimicrobial peptide polymers (SNAPPs) are an emerging class of antimicrobials against multidrug-resistant bacteria. Their encapsulation in particle carriers can improve their therapeutic efficacy by preventing degradation, reducing clearance, and enhancing intracellular delivery dosage to bacteria-infected host cells. Herein, two template-mediated strategies report...
Oil exploration generates produced water that is characterized as hazardous and toxic waste. Produced contains a mixture of various pollutants, including monoaromatic hydrocarbons BTEX (benzene, toluene, ethylbenzene, xylene), compounds are carcinogenic even in small concentrations. In this study, tannin iron complex (TA-FeIII), blended into polyethersulfone (PES) membrane was evaluated for the...
Redox-inactive metal ions that function as Lewis acids play pivotal roles in modulating reactivities of oxygen-containing metal complexes in a variety of biological and biomimetic reactions, including dioxygen activation/formation and functionalization of organic substrates. Mononuclear nonheme iron(III)-peroxo species are invoked as active oxygen intermediates in the catalytic cycles of dioxyg...
Recent discoveries of novel physics in two-dimensional (2D) magnetic materials have sparked the search new layered semiconductors. Compared to traditional inorganic 2D van der Waals crystals, hybrid organic–inorganic metal–halide frameworks offer significantly enhanced chemical and structural versatility, where their optical, electronic, properties can be readily modulated with both organic com...
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