نتایج جستجو برای: fluxional ligand
تعداد نتایج: 107689 فیلتر نتایج به سال:
Oxovanadium(IV), manganese(II) and copper(II) complexes of a Schiff base ligand derived from 2,4-dihydroxyacetophenone and 1,2-diaminocyclohexane have been encapsulated in the nanocavity of zeolite-Y by flexible ligand method and characterized by metal analysis, IR spectroscopic studies and X-ray diffraction patterns. The encapsulated complexes abbreviated here as CuL-Y, MnL-Y and VOL-Y catalyz...
We have demonstrated a simple and efficient route for the synthesis of a novel imine based tridentate ligand and its Pd-complex to investigate the C-C cross-coupling reactions, that involve column chromatography purification in only one step. The catalytic activity of the newly synthesized catalyst was studied for the Suzuki, Sonogashira and, Heck cross-coupling reactions under mild conditions....
Classic (dynamic exchange line-shape analysis) and novel (SSTD NMR) NMR techniques have been applied in order to obtain the kinetic and thermodynamic parameters of the three main processes occurring in the fluxional behavior of Pt-allene complexes with N-containing ligands, in four and five coordination mode, in solution. Our results show intramolecular helical and rotational movements closely ...
We report the first example of a charge-neutral linear two-coordinate copper(I) complex bearing sterically demanding acenaphthoimidazolylidene-based N-heterocyclic carbene (NHC) ligand. The identity and geometry are confirmed by single-crystal X-ray diffraction (XRD) analysis. is poorly emissive at room temperature, showing either ligand-centered (LC) emission around 340 nm when excited 300 or ...
Functionalizations of highly oxidation and hydrolysis stable mono-cationic rhenium bis-arene complexes [Re(η6-C6H6)2]+ are great interest. We directly built up structural features the well-known Hoechst Dye on coordinated arenes as a model for prospective DNA minor groove binding studies. Extensions aromatic unit with functionalized derivatized benzimidazole moieties resulted in deep orange col...
Analysis of the weak interactions within crystal structures 33 complexes various 4′-aromatic derivatives 2,2′:6′,2″-terpyridine (tpy) shows that exceed dispersion are dominated, as expected, by cation⋯anion contacts but associated with both ligand–ligand and ligand–solvent contacts, sometimes multicentred, in generally complicated arrays, probably largely determined between stacked aromatic uni...
the stability constants of species present in the systems ni(ii)-pyridoxamine(pym)(a) and ni(ii)-pyridoxamine(pym)(a)-imidazole containing ligands(b) [b = imidazole(him), benzimidazole(bim), histamine(hist) and l-histidine(his)] have been determined ph-metrically using the miniquad computer program. the existence of the species niah, nia and nia2 was proven for the ni(ii)-pym(a) system, wherea...
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