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1.

Вид документа : Статья из журнала
Шифр издания : 54/C 98
Автор(ы) : Yufit D. S., Struchkov Yu. T., Drozd V. N., Baklykov V. G., Charushin V. N., Chupakhin O. N.
Заглавие : Cyclizations of N-alkylazinium cations with bifunctional nucleophiles. 19. Crystal structure of the kinetic product of the reaction of N-methylquinoxalinium iodide with thioacetamide [Электронный ресурс]
Место публикации : Chemistry of Heterocyclic Compounds. - 1985. - Vol. 21, № 10. - С. 1168-1171
Систем. требования: http://link.springer.com/article/10.1007/BF00515263
Примечания : Bibliogr. : p. 1170-1171 (13 ref.). - 12.10.15
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): heterorings--n-methylquinoxalinium iodide
Аннотация: The mutual orientation of the heterorings and the three-dimensional structure of the kinetic product of the reaction of N-methylquinoxalinium iodide with thioacetamide were established by x-ray diffraction analysis of 2,4-dimethyl-9-acetyl-3a,4,9,9a-tetrahydrothiazolo [4,5-b]quinoxaline.
\\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1985, v.21, N 10, p. 1168.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 54/C 98
Автор(ы) : Yufit D. S., Struchkov Yu. T., Drozd V. N., Charushin V. N., Baklykov V. G., Chupakhin O. N.
Заглавие : Cyclization of N-alkylazinium cations with bifunctional nucleophiles. 22. Crystal and molecular structure of tetrahydroquinoxaline condensed with the six-membered 1,3,4-thiadiazine ring [Электронный ресурс]
Место публикации : Chemistry of Heterocyclic Compounds. - 1987. - Vol. 23, № 5. - С. 583-587
Систем. требования: http://link.springer.com/article/10.1007/BF00476392
Примечания : Bibliogr. : p. 587 (19 ref.). - 22.10.15
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): x-ray diffraction --hydrogens--tetrahydropyrazine
Аннотация: X-ray diffraction examination of 4-acetyl-10-methyl-2-phenyl-1,4,4a,5,10,10a-hexahydro-1,3,4-thiadiazino[5,6-b]quinoxaline has shown that the 4a-H and 10a-H hydrogens attached to the carbon atoms common to both heterocycles are cis-oriented, as in the annelation of five-membered heterocycles to the tetrahydropyrazine ring, but in this case the torsion angle H(4a)C(4a)C(10a)H(10a) is much greater, having a value of 60‡
\\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1987, v.23, N 5, p. 583.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 54/P 49
Автор(ы) : Pestov A. V., Slepukhin P. A., Charushin V. N.
Заглавие : Copper and nickel chelate complexes with polydentate N,O-ligands: structure and magnetic properties of polynuclear complexes [Электронный ресурс]
Место публикации : Russian Chemical Reviews. - 2015. - Vol. 84, № 3. - С. 310-333
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 331-333(182 ref.). - 18.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): hydrogen-bonded bridges --ray crystal-structure --schiff-base ligand
Аннотация: A comparative analysis of the structures of copper(II) and nickel(II) chelate complexes with N-substituted 2-aminoethanols, 3-aminopropan- 1 -ols, glycines and beta-alanines is performed. It is shown that tetradentate ligands based on 3-aminopropan- 1 -ol and P-alanine, sterically hindered 2-aminoethanol derivatives and tridentate enamino ketone derivatives tend to form oligonuclear copper(II) and nickel(II) complexes. Glycine derivatives do not provide the formation of oligonuclear copper(II) and nickel(II) complexes. The magnetic properties of a number of polynuclear complexes are compared.
\\\\expert2\\nbo\\Russian Chemical Reviews\\2015, V.84, N38, p. 310-333.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 54/D 64
Автор(ы) : Verbitskiy E. V., Slepukhin P. A., Valova M. S., Cherprakova E. M., Schepochkin A. V., Rusinov G. L., Charushin V. N.
Заглавие : Dithienoquinazolines – A Convenient Synthesis by the Oxidative Photocyclization of 4,5-Dithienyl-Substituted Pyrimidines and Their Photophysical Properties [Электронный ресурс]
Место публикации : European Journal of Organic Chemistry. - 2014. - № 36. - С. 8133-8141
Систем. требования: http://onlinelibrary.wiley.com/doi/10.1002/ejoc.v2014.36/issuetoc
Примечания : 06.07.2015
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): dithienoquinazolines--pyrimidines--photophysical properties
Аннотация: A convenient route to a new class of thienoacene systems bearing a fused pyrimidine ring is presented along with their optoelectronic properties. The photophysical and electrochemical properties of these newly developed thieno-aza-acenes have been investigated by UV/Vis absorption and photoluminescence spectrophotometry and cyclic voltammetry, and some crystal structures have also been determined.
\\\\expert2\\nbo\\European Journal of Organic Chemistry\\2014, № 36. p.8133-8141.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Khmara E. F., Chizhov D. L., Sidorov A. A., Aleksandrov G. G., Slepukhin P. A., Tokarev K. L., Charushin V. N.
Заглавие : Synthesis, structure, electrochemical and magnetic properties of 2,6-bis(5-trifluoromethylpyrazol-3-yl)pyridine and its NiII complexes
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2012. - Vol.61, №2. - С. 313-325
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): electrochemistry--nickel complexes--x-ray diffraction analysis
Аннотация: 2,6-Bis(5-trifluoromethylpyrazol-3-yl)pyridine (H2L) and its mono-, tri-, and tetranuclear NiII complexes were synthesized for the first time. All the obtained compounds were characterized by single-crystal X-ray diffraction analysis. In the complexes, 2,6-bis(5-trifluoromethylpyrazol-3-yl) pyridine exists in the neutral and dianionic forms and exhibits different coordination modes (κ3-, μ2-κ3: κ1-, and μ3-κ3: κ1:κ1). The electrochemical and magnetic properties of all compounds were studied. The tetranuclear NiII complex with the L2- dianion is reduced in two sequential reversible one-electron steps
\\\\Expert2\\NBO\\Russian Chemical Bulletin\\2012, 61 (2), 313-325.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 54/S 89
Автор(ы) : Slepukhin P. A., Gruzdev D.A., Chulakov E.N., Levit G. L., Krasnov V. P., Charushin V. N.
Заглавие : Structures of the racemate and (S)-enantiomer of 7,8-difluoro-3-methyl-2,3-dihydro-4H-[1,4]benzoxazine
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2011. - Vol.60, №5. - С. 955-960
Примечания : Bibliogr. : p. 960 (17 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): enantiomers --racemates--organofluorine compounds
Аннотация: The comparative X ray diffraction study of racemic and (S) enantiomer of 7,8 difluoro 3 methyl 2,3 dihydro 4H [1,4]benzoxazine was carried out. The both forms of benzoxazine are crystallized in the orthorhombic crystal system, the (S) enantiomer is crystallized in the chiral space group P212121, while the racemate is crystallized in the centrosymmetric Pbca space group. The bond lengths and bond and torsional angles in the both molecules are almost equal. The packing of the racemate is characterized by a closer interaction of polar NH...О groups.
\\\\expert2\\NBO\\Russian Chemical Bulletin\\2011, 60 (5), 955-960.pdf
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7.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Verbitskiy E. V., Toropova M. S., Kodess M. I., Ezhikova M. A., Isenov M. I., Pervova M. G., Kravchenko M. A., Medvinskiy I. D., Skornyakov S. N., Rusinov G. L., Charushin V. N.
Заглавие : Synthesis, X-ray crystal structure and antimycobacterial activity of enantiomerically pure 1-ethyl-2,3-dicyano-5-(het)aryl-6-hetaryl-1,6-dihydropyrazines
Место публикации : ARKIVOC. - 2014. - Pt. V. - С. 247-270
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): x-ray crystal --antimycobacterial activity--synthesis
\\\\expert2\\nbo\\ARKIVOC\\2014, p.247-270.pdf
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deev S. L., Sheina E., Shestakova T. S., Khalimbadzha I., Charushin V. N., Chupakhin O. N., Batsyts S., Namyslo J. C., Schmidt A., Kiskin M. A., Paramonov A. S., Shenkarev Z. O.
Заглавие : Betaine–N-heterocyclic carbene interconversions of quinazolin-4-one imidazolium mesomeric betaines. sulfur, selenium, and borane adduct formation
Место публикации : European journal of organic chemistry. - 2020. - № 4. - С. 450-465
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): anionic nhcs--betaines--boron compounds--carbenes--cyclic borates--imidazol-2-ylidene
Аннотация: Reaction of N-alkylated imidazoles with 2-chloro-4-quinazolinone gave mesomeric betaines, 2-(1-alkyl-1H-imidazolium-3-yl)quinazolin-4-olates, for which three tautomeric forms of N-heterocyclic carbenes (NHCs) can be formulated, in addition to an anionic NHC after deprotonation. The NHC tautomers were trapped with sulfur, selenium, triethylborane, and triphenylborane as thiones, selenones and borane adducts, respectively. We obtained two isomers of the cyclic borane adducts, diazaboroloquinazolinones with [1,5-a] and [5,1-b]-type fusion between the quinazolinone and the diazaborole rings. They correspond to two different NHC tautomers and to the anionic NHC derived thereof. The third NHC tautomer was trapped as a non-cyclic adduct with tris(pentafluorophenyl)borane by coordination to the quinazoline oxygen atom. 2D 1H-15N HMBC experiments of 15N-labeled quinazolinone fragments, quantitative measurements of long-range 1H-15N coupling constants (JHN), and five X-ray single crystal analyses have been carried out for the structure elucidations and to gain insight into the NMR spectroscopic properties of these compounds.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boltacheva N. S., Slepukhin P. A., Pervova M. G., Rudina A. Kh., Chemagina I. V., Taibinov N. P., Filyakova V. I., Loboiko B. G., Charushin V. N.
Заглавие : Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 7. - С. 1464-1473
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.
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10.

Вид документа :
Шифр издания :
Автор(ы) : Boltacheva N. S., Slepukhin P. A., Pervova M. G., Rudina A. Kh., Chemagina I. V., Taibinov N. P., Filyakova V. I., Loboiko B. G., Charushin V. N.
Заглавие : Oximes of fluoroalkyl-containing 1,3-diketones: specific features of synthesis, analysis, and thermal stability
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 4. - С. 1464-1473
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Nitrosation of lithium 1,3-diketonates bearing fluoroalkyl and aryl (or hetaryl) substituents in positions 1 and 3 results in 3-polyfluoroalkyl-1,2,3-propanetrione 2-oximes (from this point on, oximes). Under similar conditions, lithium (Z)-1,1,1-trifluoro-4-oxo-4-(thien-2-yl)-2-buten-2-olate forms a hydration product of the corresponding oxime. Nitrosation of fluoroalkyl-containing lithium 1,3-diketonates is accompanied by retro-decomposition of the initial lithium 1,3-diketonates and the target oximes (or their hydration products) followed by oxidation and hydrolysis of the reaction products. Under the GC-MS conditions, the oximes undergo partial thermal decomposition to 2-aryl(hetaryl)-2-oxoethanenitriles. An analysis of solutions of the oximes in DMSO-d6 by 1H and 19F NMR spectroscopies revealed isomerization and hydration of these compounds. The temperature ranges of stability of the oximes were determined by thermogravimetric analysis and differential thermal analysis. The molecular and crystal structures of 4,4-difluoro-1-(4-methoxyphenyl)-1,2,3-butanetrione 2-oxime and 4,4,4-trifluoro-1-(thien-2-yl)-1,2,3-butanetrione 2-oxime were determined by X-ray diffraction.
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