Chemistry Commons^™

Extraction Rate Study Of Ni(Iii) Oxinate & Separation Of Cu(Ii) & Ni(Ii) With Oxide Based On Differences In Rates Of Extraction, Somchai Taichilassunthorn

Masters Theses & Specialist Projects

This study was conducted with metal ion concentrations in the range of parts per million and used batch extraction techniques to study the non-equilibrium extraction of Cu(II) and Ni(II) oxinates. Contrary to other authors, atomic absorption was used exclusively for the analysis of phases.

The two main areas of investigation in this study were:

1. Kinetics study of extraction of Ni(II) oxinate.
2. Separation of Cu(II) and Ni(II) with oxine based on differences in rates of extraction.

It was the purpose of this work to study the extraction of Cu(II) and Ni(II) with oxine in chloroform. This particular pair of elements was …

Photochemistry Of Beta-Methyl-Beta-Nitrostyrene And Its Derivatives, Mohammad Z. Kassaee

Masters Theses & Specialist Projects

o-CH₃, o-CH₃O, m-CH₃O and p-CF₃-β-methyl- β-nitrostyrene (compounds not previously reported) were synthesized using the method of Lappin¹³ and Robertson.¹⁴ These styrenes were irradiated in the U.V. region. The yield of corresponding oximes varied from 85 to 100% in aqueous ethanol. This variation in yield of the oximes was attributed to the effect of the substituent on the phenyl rings of the corresponding styrenes. Electron donating substituents promoted the nitro-nitrite rearrangement and electron-withdrawing groups inhibited this rearrangement. A mechanism is proposed for this reaction which unifies and includes ideas proposed by …

Some New Metallocenes, Larry Warfield

Masters Theses & Specialist Projects

The synthesis and characterization of some new metallocenes is discussed. These organometallic compounds contain some of the first reported pi-complexes between an aromatic ylid, triphenylphosphoniumcyclopentadienvlide. and some transition metals.

Also reported is the synthesis of some new mercury halide metallocenes involving dimethylsulfoniumcyclopentadienylide as the sigma bonded organic substrate.

New Applications Of The Mannich Reaction, Yu-Fang Wang

Masters Theses & Specialist Projects

French chemists found that the reaction of trifluoroacetic anhydride with the N-oxide of trimethlyamine leads to the methylenedimethylimmonium trifluoroacetate. This salt is considered to be the actual reagent in the Mannich reaction conducted with dimethylamine and formaldehyde. Indeed use of this salt gives higher yields than those obtained via the classical Mannich procedure. This salt could be distilled under vacuum (5 x 10^-2 mm) and reacted with phenylmagnesium bromide to give an 80% yield of benzyldimethylamine. The trimethlsilyl ethers of ketones were employed as intermediates and exhibited regioselectively. For unsymmetrical ketones, the more stable enol was formed thermodynamically and …

Ua66/7/2 Newsletter, Wku Chemistry

WKU Archives Records

Newsletter created by and about the WKU Chemistry department.