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V. A. Lukyanova T. S. Papina 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2013,87(2):340-341
The energies of combustion of perfluoro(2-methyl-3-oxa)hexanoic and perfluoro(2,5-dimethyl-3,6-dioxa)nonanoic acids are for the first time measured in a calorimeter with a rotating platinized bomb and used to calculate the standard enthalpies of formation of these compounds in the liquid state. Based on the enthalpies of formation, the contribution from the [-CF2OCF(CF3)-] group to the enthalpies of formation of perfluoro acids is calculated. 相似文献
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Anastasia S. Kozlenko Nadezhda I. Makarova Ilya V. Ozhogin Artem D. Pugachev Maria B. Lukyanova Irina A. Rostovtseva Gennady S. Borodkin Natalia V. Stankevich Anatoly V. Metelitsa Boris S. Lukyanov 《Mendeleev Communications》2021,31(3):403-406
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V. S. Rusakov I. A. Presniakov A. M. Gapochka A. V. Sobolev T. D. Tolmachev E. N. Lukyanova 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(6):672-677
Hyperfine interactions of 57Fe impurity nuclei are studied by probe Mössbauer spectroscopy in TmNiO3 and YbNiO3 perovskite-like nickelates in the ranges of temperature transitions of an insulator (T < T IM ) ? metal (T > T IM ) and antiferromagnetic (T < T N ) ? paramagnetic (T > T N ). The changing behavior of hyperfine interaction parameters of 57Fe nuclei in the ranges of phase transition temperatures (T IM and T N ) is analyzed. The results are interpreted in the context of the charge disproportionation of Ni3+ cations associated with the electronic localization in monoclinic-distorted nickelates at T < T IM . 相似文献
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M.?B.?Lukyanova V.?V.?TkachevEmail author B.?S.?Lukyanov A.?D.?Pugachev I.?V.?Ozhogin O.?A.?Komissarova S.?M.?Aldoshin V.?I.?Minkin 《Journal of Structural Chemistry》2018,59(3):565-570
New spiropyran salts in the row of 1,3,3-trimethylspiro-indoline-2,2'-[2Н]-chromene are prepared and their structures are investigated. Molecular structures of obtained compounds are confirmed by X-ray diffraction and NMR spectroscopy. An open merocyanine isomer is found to be the most stable structure for one of these compounds. 相似文献
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V. A. Lukyanova T. S. Papina K. V. Didenko A. S. Alikhanyan 《Journal of Thermal Analysis and Calorimetry》2008,92(3):743-746
The standard enthalpy of combustion of crystalline silver pivalate, (CH3)3CC(O)OAg (AgPiv), was determined in an isoperibolic calorimeter with a self-sealing steel bomb, Δc
H
0 (AgPiv, cr)= −2786.9±5.6 kJ mol−1. The value of standard enthalpy of formation was derived for crystalline state: Δf
H
0(AgPiv,cr)= −466.9±5.6 kJ mol−1. Using the enthalpy of sublimation, measured earlier, the enthalpy of formation of gaseous dimer was obtained: Δf
H
0(Ag2Piv2,g)= −787±14 kJ mol−1. The enthalpy of reaction (CH3)3CC(O)OAg(cr)=Ag(cr)+(CH3)3CC(O)O.(g) was estimated, Δr
H
0=202 kJ mol−1. 相似文献
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B. S. Lukyanov A. N. Utenyshev V. V. Tkachev S. M. Aldoshin V. I. Minkin M. B. Lukyanova Yu. S. Alekseenko 《Chemistry of Heterocyclic Compounds》2008,44(2):163-169
The structure of an indoline spiropyran of molecular formula C29H33NO2 has been studied by X-ray crystallographic analysis. Structural parameters have been determined for this spiropyran, containing
a condensed furan fragment with a tert-butyl group, in comparison with the structure of other spiropyrans of this series.
The observation in the absorption spectrum of a photoinduced cis-cis isomer is linked with its stabilization by the steric
effect of the bulky tert-butyl group and the strength of barriers at 77 K.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 221–228, February, 2008. 相似文献
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L. L. Rokhlin N. Yu. Tabachkova T. V. Dobatkina E. A. Lukyanova I. E. Tarytina I. G. Korolkova 《Bulletin of the Russian Academy of Sciences: Physics》2018,82(9):1158-1164
Kinetics and phase transformations are studied for the previously unconsidered decomposition of supersaturated solid solution in magnesium-based alloys Mg–Dy–Sm. The decomposition of solid solution slows when there is an increase in % Dy: % Sm ratio in the alloys. Mg–Sm and Mg–Dy alloys grow harder when Dy and Sm are added to them, respectively. Products of decomposition in ternary Mg–Dy–Sm alloys are the same as in binary alloys Mg–Dy and Mg–Sm but contain combinations of Dy and Sm. 相似文献
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Lukyanova A.V. Rakhimov A.T. Suetin N.V. 《IEEE transactions on plasma science. IEEE Nuclear and Plasma Sciences Society》1991,19(2):197-203
A numerical model of RF discharges in a steady transverse magnetic field is developed. This model is valid in a range of parameters (gas pressure, magnetic field, RF voltage) used in a number of experimental and technical installations. The comparison between numerical calculations and some experimental results is presented 相似文献
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