Zobrazeno 1 - 10
of 49
pro vyhledávání: '"G. I. Zelchan"'
Publikováno v:
ChemInform. 23
Publikováno v:
Journal of Organometallic Chemistry. 426:41-48
FAB mass spectra of silatranes evidence in favour of stronger donor-acceptor interaction in condensed phase in comparison with that under electron impact (EI) conditions. In contrast to EI mass spectra not confirming the presence of donor-acceptor in
Publikováno v:
Chemistry of Heterocyclic Compounds. 28:574-576
PMR spectra of 2-aryl- and 2-hetaryloxazolidines-1,3 are studied. A PMR criterion is revealed according to which the absolute configuration of the C(2) atom of the oxazolidine ring can be assigned.
Autor:
G. I. Zelchan, V. P. Baryshok, Yu. A. Lukina, M. G. Voronkov, M. S. Sorokin, S. N. Tandura, V. A. Pestunovich
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 30:223-226
1. The chemical shifts of the CH2N protons in the PMR spectra of dilute solutions of Si-substituting silatrane derivatives in chloroform are linearly dependent on the distance between the silicon and nitrogen atoms in their molecules. 2. The degree o
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 520:179-195
Es wird uber Darstellung und charakteristische Merkmale von 41 neuen cyclischen siliciumorganischen Estern von Diethanolaminen — 1, 3-Dioxa-6-aza-2-silacyclooctanen — berichtet. Neun verschiedene Verfahren zu ihrer Gewinnung wurden untersucht, da
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 23:1424-1427
1. The IR spectra and Raman spectra of tetraacetoxysilane, methylacetoxysilanes, and their deuterosubstituted analogs were investigated. 2. The spectroscopic properties of the Si-C and Si-O bonds were discussed. 3. The dependence of the integral inte
Publikováno v:
Chemistry of Heterocyclic Compounds. 10:531-534
Autor:
M. Witanowski, M. G. Voronkov, V. P. Baryshok, S. N. Tandura, V. I. Glukhikh, G. Engelhardt, V. A. Pestunovich, G. I. Zelchan
Publikováno v:
Spectroscopy Letters. 11:339-344
1H, 13C, 19F and 29Si NMR chemical shifts and coupling constants for Si-substituted silatranes, XSi(OCH2CH2)3N, and triethoxysilanes, XSi(OCH2CH3)3, where X = H, CH3, and F have been studied. Expansion of the coordination numbers of silicon and tin l
Autor:
G. I. Zelchan, E. Lukevits, V. P. Vorob'eva, Yu. A. Lebedev, E. A. Miroshnichenko, I. I. Solomennikova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:1372-1376
A thermochemical study has been made of trioxaazaboratricycloalkanes by means of combustion and vaporization calorimetry. From the numerical values obtained, the enthalpies of formation of these compounds in the standard state and in the gas phase we
Publikováno v:
Chemistry of Heterocyclic Compounds. 11:28-31