نتایج جستجو برای: ligand modification

تعداد نتایج: 233094  

ژورنال: Medical Laboratory Journal 2017
Chalabian, Firoozeh, Goudarziafshar , Hamid, Katouzian, Fatemeh, Rashki , Somayeh , Tamoradi, Taiebeh,

ABSTRACT         Background and objectives: Synthesis and characterization of several metal complexes (metal ions: Co2+, Ti4+ and Ce3+) of macroacyclic Schiff base ligand have been reported. The Schiff base ligand is prepared from the condensation reaction of 1, 4-di-(4-fluoro-2-aminophenoxy) butane with salicylaldehyde in ethanol. In addition, antibacterial ...

Abbas Tarassoli Azadeh Papan, Zahra Shahidian

In this study, we have been involved in the synthesis and characterization studies of a new cyclotriorganophosphazenes complex with protected phloroglusine ligand. Firstly,we synthesized hexachlorocyclotirphosphazene from ammonium chloride and phosphorus pentachloride reaction and then two hydroxyl groups of the phloroglusine ligand were protected with methyl iodide and tosyl chloride. Fina...

Jeyasekaran Joseph Natarajan Raman, Ramaraj Jeyamurugan

A new series of transition metal complexes of Co(II), Ni(II), Cu(II) and Zn(II), has beensynthesized from the Knoevenagel condensate Schiff base ligand(L) derived from β-ketoanilideand furfural with o-phenylenediamine and diethylmalonate. Structural features were determinedby spectral and analytical techniques. Square-planar geometry has been adopted by thecomplexes except cobalt complex which ...

New coordination polymer of [HgLCl2]n (1) with HgCl2 and Schiff base bidentate ligand (4-methoxyphenyl) pyridine-2yl methyleneamine (L) was prepared and structurally characterized. In the 1D network structure of 1, the mecury (II) ion adopts an HgN2Cl3 distorted square pyramid geometry. In this complex, one of the chlorine acts as bridging ligand connecting two adjacent mercury(II) ions while, ...

Journal: :Materials research express 2022

Abstract The photovoltaic properties of quantum dot (QD) sensitized solar cells (QDSCs) depend significantly on the surface modification applied to QDs and nanostructured interface between electrode surface. In development QDSCs with spatially ordered QD arrays, linking molecular ligands (QD-ligands) can lead realization novel QDSCs. ligand shell around mediates electron energy transfer process...

Journal: :Inorganic Chemistry 2021

A metal-induced self-assembly strategy is used to promote the π-dimerization of viologen-based radicals at room temperature and in standard concentration ranges. Discrete box-shaped 2:2 (M:L) macrocycles or coordination polymers are formed solution by a ditopic ligand with cis-[Pd(en)(NO3)2], trans-[Pd(CH3CN)2(Cl)2], [Pd(CH3CN)4(BF4)2]. Changing redox state bipyridium units involved tectons, fr...

Journal: :journal of sciences islamic republic of iran 0

a liquid membrane containing diethylene glycol monobutyl ether (2) shows specificity for k ion in transport while diethylene glycol dibutyl ether (1) was selective for na over k . as an extractant, ligand 2 exhibited pronounced extraction selectivity for k over na in comparison with ligand 1

Abbas Ali Esmaeili Ali Morsali Malihe Javan Khoshkholgh S. Ali Beyramabadi,

Here, new N,N′-dipyridoxyl(4,4''-diaminodiphenylether) Schiff-base ligand has been synthesized and characterized by IR, 1H NMR and mass spectrometry. Also, geometry optimization and theoretical assignment of IR spectrum of the ligand have been computed by employing density functional theory (DFT) method. Two pyridine rings and benzene rings in the bridge region are not in the same plane. The ca...

Journal: :Public understanding of science 2012
Priya Kurian Jeanette Wright

The acceptance of public participation in science and technology governance in liberal democratic contexts is evident in the institutionalization of a variety of mechanisms for participation in recent decades. Yet questions remain about the extent to which institutions have actually transformed their policy practice to embrace democratic governance of techno-scientific decision making. A critic...

Journal: :European Journal of Inorganic Chemistry 2021

Nitrogen-doped carbon dots were used as photosensitizers for H2 evolution in the presence of a series mononuclear thiosemicarbazone nickel complexes. The catalysts designed to display different substituents at para position phenyl rings. These chemical modifications tune electron-donating abilities complexes and influence their capability reduce protons into hydrogen. All photocatalytic experim...

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