نتایج جستجو برای: cobalt compounds

تعداد نتایج: 255416  

Journal: :Chemical communications 2004
J N Behera Geo Paul A Choudhury C N R Rao

An amine-templated cobalt(II) sulfate with the kagome lattice, prepared for the first time, exhibits magnetic properties comparable to those of the analogous Fe(III) compounds.

Journal: :Organic & biomolecular chemistry 2003
Marta Rosillo Luis Casarrubios Gema Domínguez Javier Pérez-Castells

Starting from conveniently designed dienynes complexed to cobalt, a tandem RCM-intramolecular Pauson-Khand reaction yields tricyclic compounds. The methodology allows the synthesis of 6,5,5 and 7,5,5 systems.

2003
David Kahn S M N

The iq-hmziitation of an experimental design to investigate the variation in cobalt hardened gold electrodeposition produced a series of electrodeposited AuCo alloys which had been stripped from their copper substrates. The magnetic properties of these electroplatings were measured at room temperature using the Faraday method. These measurements showed the presence of two magnetic phases. One p...

Journal: :Molecules 2015
Fatemeh Rajabi Diego Alves Rafael Luque

The syntheses of quinoxalines derived from 1,2-diamine and 1,2-dicarbonyl compounds under mild reaction conditions was carried out using a nanoparticle-supported cobalt catalyst. The supported nanocatalyst exhibited excellent activity and stability and it could be reused for at least ten times without any loss of activity. No cobalt contamination could be detected in the products by AAS measure...

2017
L. Keith Hunt Harvey Diehl

Bivalent copper and the Schiff's base pyridylalpydidylhydrazine form two compounds, composed respectively of one molecule and of two molecules of the organic compound to one atom of copper, and having ultra violet absorption spectra differing only in the value of the molar extinction coefficients at the absorption maxima, 15,100 and 22,450, respectively at 345 mμ. The respective formation const...

Journal: :Journal of cancer research and therapeutics 2007
A M Badawi Mekawi A S Mohamed M Z Mohamed M M Khowdairy

The development of anticancer metal-based drugs was attempted by reacting dodecyl amine with selenious acid to produce a quaternary ammonium salt which was then converted to copper and cobalt cationic complexes via complexing the first compounds with copper (II) or cobalt (II) ions. The surface properties of these surfactants were investigated. The surface properties studied included critical m...

Journal: :Journal of synchrotron radiation 2015
D K Bora X Cheng M Kapilashrami P A Glans Y Luo J-H Guo

The electronic structure of a material plays an important role in its functionality for different applications which can be probed using synchrotron-based spectroscopy techniques. Here, various cobalt-based compounds, differing in crystal structure, ligands surrounding the central metal ion and morphology, have been studied by soft X-ray absorption spectroscopy (XAS) at the Co L-edge in order t...

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