Synonyms:Copperdivalent ion; Copper ion(2+); Copper(2+); Copper(2+) ion; Copper(II);Copper(II) cation; Copper(II) ion; Cu2+; Cupric cation; Cupric ion; Cupric ion(Cu2+)
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There total 320 articles about Copper, ion (Cu2+) which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:
The study presents a reactivity-based detection method for Copper(II) ions in water using the oxidative cyclization of azoanilines into highly fluorescent benzotriazoles as a fluorescence turn-on signaling mechanism. The researchers synthesized a series of azoaniline derivatives and found that the introduction of multiple electron-donating amino groups onto the azoaniline platform significantly accelerated the conversion to the emissive product. Notably, the reaction could be triggered by micromolar concentrations of copper(II) ions in water at room temperature, resulting in over 80-fold enhancement in green emission at 530 nm. The study established a direct correlation between the reaction rate and the oxidation potential of the azo precursors through comparative kinetic and electrochemical studies. The most reactive derivative was found to have a five-membered ring intramolecular hydrogen-bonding network, which facilitates the required proton transfer step and accelerates the cyclization reaction. The developed method allows for the detection of copper(II) ions in water under ambient conditions, which is significant for environmental monitoring and biological imaging.
The research investigates the kinetic template effect of copper(II) ions in the condensation reaction of salicylaldehydato-ion (sal) with diethylenetriamine (dien). The study aims to understand how copper(II) ions influence the reaction mechanism and kinetics, particularly in promoting first-order reactions within its coordination sphere. The key chemicals used include salicylaldehydato-ion, diethylenetriamine, copper(II) nitrate, and various solvents such as methanol and 1,2-dichloroethane. The researchers found that in the presence of copper(II), the reaction proceeds through a first-order kinetic process, forming a labile ternary complex where interligand condensation occurs. The study concludes that while copper(II) ions can reduce the reaction order, the activation energy for the template reaction is higher compared to the bimolecular condensation, indicating that the coordination of functional groups to the metal perturbs the optimal reaction geometry. This perturbation results in a less favorable entropy of activation for the template reaction, highlighting the limitations of metal ions in mimicking the efficiency of enzyme-catalyzed reactions.
The study presents a chelation-assisted copper(II)-catalyzed ortho-acyloxylation reaction of the sp2 C-H bond in 2-arylpyridines, using anhydrides as reaction partners and O2 as the terminal oxidant. The researchers optimized the reaction conditions, finding that using 10 mol % of Cu(OAc)2 as the catalyst, a 1:3 mol ratio of 2-arylpyridine to anhydride, and toluene as the solvent at 145 °C under an O2 atmosphere yielded the best results. The procedure demonstrated tolerance for various functional groups, such as carbomethoxyl, methoxyl, fluoro, bromo, chloro, and cyano groups, and produced mono- or diacyloxylated products in moderate to good yields. The study also explored the scope of different 2-arylpyridines and anhydrides, noting that the electronic properties of substituents on the aryl ring significantly affected the reaction outcomes. The proposed mechanism involves the formation of a Cu(II) intermediate through electrophilic attack on the phenyl ring of 2-arylpyridine, followed by oxidation to a Cu(III) intermediate and reductive elimination to produce the acyloxylation product.
The study investigates the synthesis, structures, and spectroscopic properties of crystalline adducts of zinc and copper(II) dithiocarbamate complexes with dibutyl- and diisobutylamines. The adducts, with the general formula [M(NH)(S2CNR2)2] (M = Zn, 63Cu, and 65Cu; R = CH3 and C2H5; R2 = (CH2)4O; R' = C4H9 and i-C4H9), were synthesized and characterized using EPR and solid-state natural abundance 13C and 15N CP/MAS NMR spectroscopy. The researchers discovered conformational isomerism in adducts with acyclic N-donor bases. The EPR data and computer-assisted modeling revealed the individual character of copper(II) adducts, with geometries intermediate between a tetragonal pyramid and a trigonal bipyramid. The 13C and 15N MAS NMR spectra provided insights into the atomic positions in two crystallographically independent conformer molecules of the adducts. The study also involved detailed experimental procedures, including the preparation of starting binuclear zinc complexes, synthesis of the adducts, and various spectroscopic analyses to understand their structures and properties.
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