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Proposal of an Amide-Directed Carbocupration Mechanism for Copper-Catalyzed meta-Selective C-H Arylation of Acetanilides by Diaryliodonium Salts
C bond activation Carbocupration Copper catalysis Density functional theory Selectivity
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2012/4/5
We examined the puzzling mechanism for Cu-catalyzed meta-C-H arylation reaction of anilides by diaryliodonium salts through systematic theoretical analysis. The previously proposed anti-oxy-cupration ...
Determination of stability constants of 5-(2-hydroxybenzylidene)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione with copper(II) and mercury(II) ions
Cu(II) and Hg(II) complexes 5-(2-hydroxybenzylidene)-2-thioxodihydropyrimidine-4,6(1H,5H)-dione spectrophotometry
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2011/4/6
In this work, a hard model chemometric method was used to determine the stability constants of copper(II) and mercury(II) complexes with the newly synthesized ligand 5-(2-hydroxybenzylidene)- 2-thioxo...
Stability study of passive film on copper surface as a function of anodic potential
Electrochemical impedance spectroscopy model circuits copper surface passive film transition stage interfaces diffusion coefficient
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2011/4/6
Results for passive film formation and breakdown on copper disk electrodes in buffer solutions, pH 9.2 and 8.5, were reported earlier. The present studies were carried out in a buffer solution, pH 8.0...
Controlled growth of two-dimensional copper nanoplates in graphite gallery
Carbon-encapsulated nanostructures electron microscopy Raman spectroscopy X-ray diffraction
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2011/4/6
Copper nanoplates embedded in a graphite gallery were obtained by in situ reduction of stage 1, stage 2, and stage 3 CuCl2-graphite intercalation compound precursors. The characterization results indi...
Electrochemical impedance spectroscopic studies of the passive layer on the surface of copper as a function of potential
cyclic voltammetry passive film interfaces
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2010/12/3
Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to investigate the oxide layer formed on a copper disc electrode and the changes that took place when treated potenti...
Solid phase extraction of copper, nickel, and cobalt in water samples after extraction using surfactant coated alumina modified with indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption spectrometry
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
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2010/12/3
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
Synthesis and crystal structure of a novel multimodal ligand, 6,6'-bis(2-(di(pyridin-2-yl)methylene)-1-methylhydrazinyl)-2,2'-bipyridine, and its copper(I) complex, {[Cu3L2](PF6)3° 3H2O} (1)
dipyridyl ketone metal complexes N-donor ligands
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2010/12/3
The single crystal X-ray structure of the novel multimodal ligand 6,6'-bis(2-(di(pyridin-2-yl)methylene)-1-methylhydrazinyl)-2,2'-bipyridine, C34H28N10 (L), was determined at 120 (2) K. The ligand pos...
Electrochemical Impedance Spectroscopic Studies of Passive Layer on Copper Surface as a Function of Potential.
Copper electrochemical impedance spectroscopy cyclic voltammetry
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2010/10/19
Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to investigate the oxide layer formed on a copper disc electrode and the changes that took place when treated potenti...
'Solid phase extraction of Copper, Nickel and Cobalt in water samples after extraction using surfactant Coated alumina modified with Indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
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2010/10/19
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
Synthesis and crystal structure of a novel multimodal ligand, 6,6'-bis(2-(di(pyridin-2-yl)methylene)-1-methylhydrazinyl)-2,2'-bipyridine and its copper(I) complex, {[Cu3L2](PF6)3?3H2O} (1)
Bipyridine derivatives hydrazone dipyridyl ketone metal complexes
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2010/10/19
The single crystal X-ray structure of the novel multimodal ligand 6,6’-bis(2-(di(pyridin-2-yl)methylene)-1-methylhydrazinyl)-2,2’-bipyridine, C34H28N10 (L), was determined at 120 (2) K. The ligand pos...
Study of catalytic activities of nanostructure copper and cobalt supported ZSM-5 catalysts for conversion of volatile organic compounds
Catalytic oxidation volatile organic compound ethyl acetate toluene Cu-ZSM-5 Co-ZSM-5
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2010/10/14
This paper reports the comparison of the activities of nanostructure Cu-ZSM-5 and Co-ZSM-5 catalysts for conversion of ethyl acetate and toluene and deals with the relationship between activity and st...
A study of growth and breakdown of passive film on copper surface by electrochemical impedance spectroscopy
Copper electrochemical impedance spectroscopy cyclic voltammetry passive film interfaces
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2010/4/8
Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry were used to investigate the oxide layer formed on a copper disc electrode and the changes that took place when treated potentiostat...
Study of binary complexes of nickel(II), copper(II), and vanadium(V) with acetazolamide in aqueous medium by voltammetry
Acetazolamide Copper Nickel Vanadium Binary complexes Electronic Spectra Voltammetr
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2010/4/8
The voltammetric behaviour of acetazolamide, the systemic carbonic anhydrase inhibitor, in the presence of some metal ions (Cu(II), Ni(II), and V(V)) were investigated using square-wave and cyclic vol...
Synthesis and Characterization of Tetraoxime Ligand, Bis-[(2E,3E,2´E)-3,3´-(1,2-Phenylene-Dinitrilo)dibutan-2-One Dioxime] and Its Dinuclear and Tetranuclear Copper(II)/Nickel(II) Complexes
Tetraoxime dinuclear tetranuclear copper and nickel complexes
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2010/4/9
A new tetraoxime, (H4L), was prepared in EtOH by reacting biphenyl-3,3´,4,4´-tetramine with butane-2,3-dione oxime. The tetraoxime ligand was characterized by elemental analyses, H-NMR and...
Reconstructing physico-chemical parameters of hydrothermal mineralization of copper at the Malanjkhand deposit, India, from mineral chemistry of biotite, chlorite and epidote
hydrothermal temperature fugacity copper complexing
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2017/8/10
Mineral chemistry of biotite, chlorite and epidote associated with the granitoid ore body of the Malanjkhand copper-molybdenum deposit have been studied to constrain temperature, oxidation and sulfida...