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Search Publications by: Anzor I. Mikaia (Fed)

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Displaying 51 - 75 of 79

A thermochemical study of dissociative ionization of 4,4,-dimethyl-1-thia-4-silacyclohexane and 2,3,3-trimethyl-1-thiacyclopentane. decomposition pathways produce a dimethylsilanethione ion-radical [Me2Si=S]+

June 11, 1985
Author(s)
Natalya Tarasenko, Vera Volkova, Vladimir G. Zaikin, Alexander Tishenkov, Vitaly Avakyan, leonid Guselnikov, Mikhael Voronkov, SV Kirpichenko, EN Suslova, Anzor I. Mikaia
Electron impact and photoionization mass spectrometry methods are employed for the study of dissociative ionization of 4,4-dimethyl-l-thia-4-silacyclohexane and 2,3,3- trimethyl-l-thia-3- silacyclopentane. The ionization energies and appearance energies of

Pyrolysis of silicon-containing cyclic polysulphides

June 1, 1985
Author(s)
Anzor I. Mikaia, EA Chernishev, Oleg Kuzmin, AV Lebedev, Vladimir G. Zaikin
Pulse pyrolysys - GC-MS method is applied for the study of thermal decomposition of of silicon- containing monocyclic polysulphides.

Mechanism of Gas-Phase Hydrogenation of Alicyclic Ketones on Iron Catalyst: Effective

May 1, 1985
Author(s)
Anzor I. Mikaia, Leonid S. Glebov, Vladimir Smetanin, Vladimir G. Zaikin, George A. Kliger, Sergai Loktev
Mechanism of gas phase hydrogenation of cyclopentanone and cyclohexanone over a fused iron catalyst by “Reaction GC-MS” presented. The study involves on-line deuterogenation and on-column silylation of reaction products. It is established that cyclanone

Reaction gas chromatography - mass spectrometry. Communication 5. Determination of the position of a double bond in alkenes using selective deuteration in the column of a gas Chromatograph-mass spectrometer.

March 1, 1985
Author(s)
Anzor I. Mikaia, Vladimir Smetanin, Vladimir G. Zaikin, Valentin Vdovin
A GC-MS method is developed for the determination of double bond location in alkenes based on comparative analysis of the mass spectra of corresponding alkanes and their vicinal Dideutero-analogs obtained via online hydrogenation and selective deuteration

Reaction gas chromatography/mass spectrometry. Part IX: Post-column hydrodesulfurization in capillary GC/MS as an aid in structure elucidation of cyclic sulfides within mixtures

November 1, 1984
Author(s)
Anzor I. Mikaia, Elena Trusova, Vladimir G. Zaikin, Leonid Zegelman, Alex Urin, Naum Volinsky
A GC-MS method is developed for structure determination of cyclic sulfides within mixtures. It involves online application of a gas-phase hydrodesulfurization reaction after GC separation and before MS analysis. Combined analysis of EI spectra registered

A method for the synthesis of bi- and tricyclic saturated hydrocarbons

October 1, 1984
Author(s)
Anzor I. Mikaia, Leonid S. Glebov, Vladimir G. Zaikin, OA Lesik, EV Marchevskaya, George A. Kliger, Sergai Loktev
Reaction gas chromatography–mass spectrometry is applied to establish optimal conditions for the synthesis of bi- and tricyclic saturated hydrocarbons. Further optimization of the reaction was carried out in a pilot plant.

Reaction gas chromatography/mass spectrometry. 4—structure elucidation of cyclic sulphides by gas chromatography/mass spectrometry with the use of on-line hydrodesulphurization.

September 1, 1984
Author(s)
Anzor I. Mikaia, Elena Trusova, Vladimir G. Zaikin, Naum Volinsky, Elena Karaulova, Gregory Galpern
A GC-MS method is developed for structure determination of thiacyclanes. It is based on online gas- phase hydro- and deutero-desulfurization on Raney nickel after GC separation and before MS analysis.

Chromatomass spectrometric study of mixtures of aromatic diols using column silylation

November 1, 1983
Author(s)
Anzor I. Mikaia, Alla V. Antonova, Vladimir G. Zaikin, Nikolay A. Prostakov, Vladimir Y. Rumyantsev, Evgenyi Slivinsky, Sergai Loktev
A GC-MS method is developed for the study of C 4 -C10 aliphatic diols in complex mixtures. The method includes a GC column trimethylsilylation with N,0-bis(trimethyl­silyl)trifluoroacetamide.

Mass Spectrometry of Small Cycles (C,Si,Ge)

September 29, 1983
Author(s)
Anzor I. Mikaia, Vladimir G. Zaikin, Valentin Vdovin
Decomposition of cyclopropane and cyclobutane containing compounds with Carbon, Silicon and Germanium atoms under mass spectrometry conditions is discussed.

Reaction chromato-mass spectrometry when studying cyclopropane compounds

May 1, 1983
Author(s)
Anzor I. Mikaia, Lyudmila Medvedkova, Vladimir G. Zaikin, Valentin Vdovin, A Kamisheva
A GC-MS method for structure elucidation of cyclopropane compounds is developed. The method includes the use of hydrogenolysis microreactor in the inlet system of a GC-MS and H2 or D2 as carrier and reagent gas.

Nitration of alkyl substituted 4-aryl(benzoyl)pyridynes

May 1, 1982
Author(s)
Anzor I. Mikaia, Nikolay A. Prostakov, Anatolyi Soldatenkov, AP Krapivko, AA Fomichev, AA Ustenko
Peri-effect leading to a base peak of [M-NO2] ion in the spectra of dinitro diarenes is described along with the synthesis of arylpyridines

Effects of stereoisomerism in the mass spectra of 2,4-disubstituted thiacyclohexanes

July 9, 1980
Author(s)
Anzor I. Mikaia, Elena Trusova, Lyudmila Perepelitchenko, Vladimir G. Zaikin
The stereospecificity of fragmentation for isomeric dialkyl- and methyl,phenylthiacyclohexanes under electron ionization are established. Experimentally obtained relative Ionization and appearance energies for the stereoisomers are in agreement with

Ionization and appearance potentials in organic chemistry. 3. Determination of the difference between the enthalpies of formation of cis- and trans-isomers of bicyclo[4.3.0]- nonane and bicyclo[4.4.0]decane Using Appearance Potentials

June 1, 1980
Author(s)
Anzor I. Mikaia, Vladimir G. Zaikin
The first adiabatic potentials of the ionization of cis and trans iosmers with respect to the linkage of the rings of bicyclo[4.3.0]nonane and bicyclo[4.4.0]decane are practically identical. for the stereoisomers of these two series have been measured. The

Mass spectrometric investigation of Alkyl-Substituted arylpyridynes

May 1, 1980
Author(s)
Anzor I. Mikaia, Anatolyi Soldatenkov, Vadim Fedorov, Vladimir G. Zaikin, Nikolay A. Prostakov
Electron ionization decomposition of aryl(polyalkyl)pyridines containing is studied. General fragmentation pathways and specific patterns for 2-. 3- and 4-arylsubstituted are identified