Zobrazeno 1 - 10
of 66
pro vyhledávání: '"S. G. Shevchenko"'
Publikováno v:
Geochemistry International. 50:185-192
Autor:
Tamara I. Vakul'skaya, S. G. Shevchenko, N. V. Russavskaya, V. A. Grabel’nykh, A. I. Albanov, Ekaterina P. Levanova, A. V. Elaev, E. N. Sukhomazova, Lyudmila V. Klyba, N. A. Korchevin, A. V. Kolesnikov
Publikováno v:
Russian Journal of Organic Chemistry. 44:1422-1427
Organotellurium oligomers with different lengths of the telluride fragments and hydrocarbon chains were synthesized by reactions of tellurium with organic dihalogen derivatives in the system hydrazine hydrate-KOH. Oligomers containing two and three c
Publikováno v:
Journal of Structural Chemistry. 47:831-838
The potential interaction surface between polyhydrated monomethyl mercury cation and 1-chloro-2.2-propane dithiol has been studied by quantum chemical methods. The system generates the hydroxonium cation due to the interaction, which is a demethylati
Publikováno v:
Journal of Structural Chemistry. 46:230-236
Potential interaction surface of polyhydrated monomethyl mercury cation with inorganic ligands (X = Cl, Br, I, HO, HS, HSe) has been studied by quantum chemical methods. Thermodynamic and kinetic parameters of complexation processes were determined.
Publikováno v:
Journal of Structural Chemistry. 46:34-42
Quantum chemical methods were used to investigate the mechanism of interaction of polyhydrated Hg(II) with methylcobalamin — a derivative of vitamin B12. Migration of the methyl group in the B12·Hg(II) nH2O cluster, initiating the formation of met
Publikováno v:
Journal of Structural Chemistry. 45:36-40
The potential surface of the reaction between the polyhydrated monomethyl mercury cation and the hydroxonium cation is considered. An \(S_{N^2 } \) type reaction, resulting in solvate-separated products (mercury dication and methane molecule), was fo
Publikováno v:
Journal of Structural Chemistry. 44:736-740
The mechanism of formation of the polyhydrate environment of monomethylmercury, -cadmium, and -zinc cations is investigated by MP2, SVWN5, and B3LYP quantum-chemical methods using the LANL2DZ basis (ExtraBasis). An anomalously high stability of the m
Publikováno v:
Russian Chemical Bulletin. 50:798-804
Photochemical transformations of phenothiazine (PTA) in solutions of halomethanes CHnX4–n (X = Cl, Br; n = 0, 1, 2) and in n-hexane—CHnX4–n mixtures under the irradiation with λ = 337 and 365 nm were studied. The rate constants of quenching of
Autor:
S. G. Shevchenko, E. N. Sukhomazova, Ekaterina P. Levanova, A. I. Albanov, V. A. Grabel’nykh, Tamara I. Vakul'skaya, N. A. Korchevin, N. V. Russavskaya
Publikováno v:
Chemistry of Heterocyclic Compounds. 44:1413-1415
1,2-Ditellurolane is an extremely unstable heterocyclic compound which can be maintained in solution in the presence of nitrosodurene for several days. It is proposed on the basis of UV spectroscopy and 1H NMR spectroscopy that a complex is formed wh
Autor:
S. G. Shevchenko, O. S. Stankevich, M. G. Voronkov, Tamara N. Aksamentova, E. I. Dubinskaya, L. E. Protasova, G. N. Legov
Publikováno v:
Russian Chemical Bulletin. 42:2031-2034
Previously unknown trialkyl(alkenylthio)stannanes were obtained by the interaction of alkenyl thiocyanates with trialkyl(methoxy)stannanes; some of their properties and transformations were studied.