Zobrazeno 1 - 10
of 28
pro vyhledávání: '"E. A. Grebneva"'
Autor:
A. B. Polonsky, E. A. Grebneva
Publikováno v:
Доклады Академии наук. 486:494-499
Based on the archival data for the period from 1956 to 2010, space-time pH changes in the Black Sea upper layer are analyzed. In the surface layer, a statistically significant decreasing in the pH value (at a level of -0.06 pH units per 50 years) was
Autor:
A. B. Polonsky, E. A. Grebneva
Publikováno v:
Doklady Earth Sciences. 486:669-674
Based on archival data of the Institute of Natural and Technical Systems for the period from 1956 to 2010, the large-scale structure, seasonal variability, and long-term trends of pH variations in the upper 150-m layer of the deep-water part of the B
Autor:
Elena N. Timofeeva, Tamara N. Aksamentova, Yuliya I. Bolgova, E. A. Grebneva, Nina N. Chipanina, Olga M. Trofimova
Publikováno v:
Computational and Theoretical Chemistry. 1091:78-84
DFT quantum chemical calculations were carried out for conformational isomers of 1-aryl-1-fluoro-5-methylquasisilatranes Ar(F)Si(OCH2CH2)2NMe (Ar = Ph (1), 4-MeC6H4 (2), 4-MeOC6H4 (3), 4-ClC6H4 (4), 3-BrC6H4 (5), 3-NO2C6H4 (6)) with a fluorine atom i
Publikováno v:
Russian Journal of Organic Chemistry. 53:309-311
Reaction of phenyltrifluorosilane with 1-hydro- and 1-ethoxysilatranes proceeds with the cleavage of the F–Si bond and the formation of 1-fluorosilatrane. Under the action of alkylsilatranes also the cleavage of C–Si bond is observed with the for
Autor:
Alexander D. Vasil'ev, M. G. Voronkov, Elena N. Timofeeva, E. A. Zel’bst, N. F. Chernov, E. A. Grebneva, Olga M. Trofimova, Alexander I. Albanov
Publikováno v:
Journal of Organometallic Chemistry. 768:10-14
A series of new pentacoordinate intramolecular organosilicon complexes F(Ar)Si(OCH2CH2)2NMe (Ar = 4-MeC6H4 (1), 4-MeOC6H4 (2), 4-ClC6H4 (3), 2-BrC6H4 (4), 3-NO2C6H4 (5)) has been synthesized by transsilylation of aryltrifluorosilanes ArSiF3 by N-meth
Publikováno v:
Russian Journal of General Chemistry. 81:2391-2411
Ways of phenyltrifluorosilane application in organoelementalal and organic synthesis are summarized and systematized for the first time. The methods of its synthesis, physicochemical properties, and reactivity are considered. Special attention is pai
Autor:
Aleksandr I. Albanov, M. G. Voronkov, Nikolay F. Chernov, Anastasiya S. Soldatenko, Tamara N. Aksamentova, Nina N. Chipanina, E. A. Grebneva, Olga M. Trofimova
Publikováno v:
ARKIVOC, Vol 2011, Iss 8, Pp 163-171 (2011)
Reactions of silicon fluorides with picolinic acid (PicH) and its O-trimethylsilyl derivative afforded neutral hexa- or pentacoordinate complexes F2SiPic2 (5) and PhFSiPic2 (6). According to NMR data, complex 5 with SiO2N2F2 fragment exists as a mixt
Autor:
Nina N. Chipanina, Tamara N. Aksamentova, A. S. Soldatenko, Olga M. Trofimova, M. G. Voronkov, E. A. Grebneva, A. I. Albanov
Publikováno v:
Russian Journal of General Chemistry. 80:1276-1282
The earlier unknown Si-fluorinated 2,8-dioxa-5-chalcogenosilocanes RFSi(OCH2CH2)2Y (R = Ph, F; Y = O, S) were synthesized. According to calculations, there is a weak transannular coordinate interaction Y→Si (Y = O, S), which is much weaker than tha
Autor:
Olga M. Trofimova, E. A. Grebneva, M. Yu. Antipin, E. A. Zel'bst, Alexander A. Korlyukov, M. G. Voronkov
Publikováno v:
Journal of Structural Chemistry. 50:1204-1207
X-ray diffraction is used to determine the crystal and molecular structure of spirocyclic (C=O→Si←O′=C′) bis(2-methyl-4-pyrone-3-oxy)difluoro(λ6)siliconium containing a hypervalent silicon atom and the previously unknown F2SiO4 coordination
Autor:
E. A. Zel’bst, Konstantin A. Lyssenko, Olga M. Trofimova, M. G. Voronkov, Aleksander I. Albanov, E. A. Grebneva, Mikhail Yu. Antipin, Alexander A. Korlyukov
Publikováno v:
Journal of Organometallic Chemistry. 694:607-615
The reaction of fluorosilanes XYSiF2 (X = Y = F; X = F, Y = Ph; X = Ph, Y = Me) with diethanolamines and their O-trimethylsilyl derivatives affords novel Si-fluoro substituted quasisilatranes 3, 5 and 9. These compounds were characterized by the mult