Amine Oxide Groups Research Articles

Glow discharge polymerization in the mixture of tetramethylsilane and ammonia gas

AbstractColorless, transparent, and filmy polymers prepared from mixtures of tetramethylsilane (TMS) and ammonia gas (NH3) were investigated by elemental analysis, infrared (IR) spectroscopy, and ESCA. These polymers contained a large amount of nitrogen residues in the form of amine, amide, and amine oxide groups. Their concentration varied with the composition of the starting TMS/NH3 mixtures. The mixing of NH3 gas with TMS influenced the chemical state of Si residues and accelerated the oxidation of Si atoms to form silicon oxides such as SiO, Si2O3, and SiO2. The polymers formed by glow discharge polymerization in the TMS/NH3 mixtures were combinations of Si‐ and N‐containing polymers and silicon oxides.

Oxidative spaltung von 2-(pyrrolidinomethyl)pyridin-1-oxid mit anschliessender rekombination und die kristallstruktur von ( e)-2-(1-pyrrolin-3-ylidenmethyl)pyridin-1-oxid

Mercury EDTA dehydrogenation of 2-(pyrrolidinomethyl)-pyridine-1-oxide ( 1) yields the pyrrolidone 5, which may be accounted for by a neighbouring effect of the amine oxide group. For an additional basic product the structure of ( E)-2-(1-pyrroline-3-ylidenemethyl)-pyridine-1-oxide ( 11) has been proved by X-ray crystallography and synthesis. This indicates a cleavage of the doubly dehydrogenated product followed by recombination.

Komplexe von 2,6-Dimethylpyridin-1-oxid mit Lanthanidjodiden

Complexes of 2,6-dimethylpyridine 1-oxide with lanthanide iodides of the formulaeLn(2,6-LTNO)5I3 whereLn=La, Tb and Yb,Ln(2,6-LTNO)4I3 whereLn=Pr and Nd and Er(2,6-LTNO)4.5I3 have been prepared and characterised by chemical analysis, infrared and conductance studies. Infrared and conductance data have been interpreted in terms of dimeric (or polymeric) structures involving bridging amine oxide groups.

Preparation and Properties of N,N-Dialkylethylenediamine N-Oxide Complexes of Nickel(II), Copper(II), and Cobalt(III)

Abstract The complexes of Ni(II), Cu(II), and Co(III) with N,N-Dialkylethylenediamine (alkyl=CH3, C2H5, and C3H7) have been prepared. It was revealed that these ligands coordinate to metal ions as bidentate ligands with amino and tertiary amine oxide groups. Two forms have been obtained for the 1 : 2 nickel(II) complexes, the hydrated green form with μeff=3.3 and the anhydrous red or reddish brown form with zero or very low magnetic moment. They are easily convertible into each other. Formation of square planar diamagnetic Ni(II) complexes with ionic-type ligand was interpreted in terms of the steric effect of the alkyl groups.

Microdetermination of the amine oxide group in organic compounds by reduction with titanium(III)

A micromethod for the determination of the amine oxide group in organic compounds is described. It is based on the reduction with an excess of titanium(III) reagent at pH 5–6, which is quantitative at room temperature within 5 min. Excess titanium(III) is back-titrated with iron(III) solution. The accuracy is about ±0.5%. Amine oxide and nitro groups are determined together. An assembly for the preparation and storage of the titanium(III) solution is also described.

Reductometric determination of the sulphoxide and amine oxide groups

Reductometric determination of the sulphoxide and amine oxide groups