Zobrazeno 1 - 10
of 21
pro vyhledávání: '"A. S. Masalimov"'
Publikováno v:
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2019.
Computer simulation of the interaction of diatomic A2 molecules (A = C, Si, N, P, O, S) with a super-small single-walled carbon nanotube (SWCNT) sensor was performed. The nonlocal density functional B3LYP / 3-21G (ORCA package) was used to study the
Publikováno v:
Russian Chemical Bulletin. 43:953-956
The interaction of 3,6-di-tert-butyl-2-hydroxyphenoxyl with triethylamine in the reaction of proton transfer is catalyzed by water. However, the rate of proton exchange with diethylamine is independent of water admixtures in the reaction medium. ESR
Publikováno v:
Russian Chemical Bulletin. 42:74-77
The mechanism of proton exchange between semiquinone neutral radicals 3,6-di-tert-butyl-2-hydroxyphenoxyl (1), 6-tert-butyl-3-chloro-2-hydroxy-4-triphenylmethylphenoxyl, and hydrochloric acid in toluene solutions has been studied. The rate of proton
Publikováno v:
Russian Chemical Bulletin. 42:71-74
Thermodynamic and kinetic acidities of 6-tert-butyl-2-hydroxy-4-triphenylmethylphenoxyl during its interaction with triethylamine in toluene have been studied by ESR. It has been shown that the protolysis of this radical is a two-pathway process, sin
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1975-1978
The kinetic acidity of 2,6-di-tert-butyl-4-hydroxyphenoxyl in tetrahydrofuran has been estimated by means of ESR. It is shown that ion pairs are formed in the process of proton transfer from the radical to triethylamine.
Autor:
A. I. Prokof'ev, A. S. Masalimov
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1970-1974
Using EPR the proton exchange between 3,6-di-tert-butyl-2-oxyphenoxyl, 4-triphenylmethyl-6-tert-butyl-3-chloro-2-hydroxyphenoxyl, and secondary amines was studied. The nature of the solvent had no effect on the kinetic parameters of the process which
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1559-1562
The kinetics of protonation of pseudoephedrine by 3,6-di-tert-butyl-2-hydroxyphenoxyl have been analyzed by the ESR technique. It was shown that protolysis of the radical produced closed ionic pairs with the pseudoephedrine cation in a dimer state.
Publikováno v:
Bulletin of the Russian Academy of Sciences Division of Chemical Science. 41:1563-1566
The effect of the viscosity of a toluene solution, with addition of Vaseline oil, on the kinetics of proton transfer from 3,6-di-tert-butyl-2-hydroxyphenoxyl to triethylamine was analyzed by the ESR technique. Activation barriers of the reaction do n
Autor:
A. I. Prokof'ev, S. N. Nikol'skii, Sh. S. Tul'baev, Z. M. Muldakhmetov, A. S. Masalimov, I. B. Bakeev
Publikováno v:
Theoretical and Experimental Chemistry. 27:163-167
Kinetic and thermodynamic parameters of the reversible reaction of proton transfer between 3,6-di-tert-butyl-2-hydroxyphenoxyl and N-methyl-4-piperidone have been investigated by means of ESB. It has been found that proton transfer from the semiquino
Publikováno v:
Theoretical and Experimental Chemistry. 27:220-224
Fast nondegenerate tautomeric transitions in the substituted ortho-hydroxy-phenoxy radical 4-triphenylmethyl-6-tert-butyl-3-chloro-2-hydroxyphenoxyl were detected by the ESR method. The kinetic and thermodynamic parameters of hydrogenotropy were dete