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1.
V. M. Farzaliev M. R. Bairamov Z. M. Dzhavadova I. G. Mamedov M. A. Dzhavadov N. Yu. Zeinalov 《Russian Journal of Applied Chemistry》2013,86(9):1456-1458
Binary cooligomers of C7 and C10 α-olefins with 2-propenylphenol were synthesized in the presence of a complex catalyst based on aluminum chloride, toluene, and ethyl chloride (1:3.0:0.6 mol). Tests of the cooligomers as antimicrobial additives to I-12A oil showed that, in concentrations of 0.25 and 0.5%, they inhibit fungal growth, being superior to 8-hydroxyquinoline (reference) in the efficiency of action. 相似文献
2.
L. N. Dzhavadov 《Physics of the Solid State》2005,47(12):2315-2320
The thermodynamic functions for cerium in the vicinity of the isomorphous γ-α phase transformation are calculated from the results of adiabatic experiments. The experimental data are approximated within a modified model of a binary solution. This model is fitted to the experimental results. The behavior of the thermodynamic functions in the ranges of temperatures and pressures covering the γ-α phase transformation is actually characteristic of a critical point of the liquid-vapor type. The critical exponent for the density is found to be β = 0.46. The other exponents are virtually identical to those obtained in the framework of the classical models describing the thermodynamic functions in the vicinity of the critical point. 相似文献
3.
4.
M. M. Krayushkin M. A. Kalik D. L. Dzhavadov L. G. Vorontsova Z. A. Starikova A. Yu. Martynkin V. L. Ivanov B. M. Uzhinov 《Russian Chemical Bulletin》2000,49(10):1757-1762
A series of new photochromic compounds were obtained for the first time from 1,2-bis(2-ethylthio-3-thienyl)perfluorocyclopentene by substituting bromine atoms or carboxy, alkoxycarbonyl, and carbamoyl groups for hydrogen atoms in positions 4 and 4′. Introduction of these substituents causes a slight bathochromic shift (by 20–30 nm) of a long-wavelength absorption band for the cyclic form and significantly increases the quantum yields of photocyclization ФA→B and ring opening ФB→A. Depending on the nature of a substituent, ФA→B decreases in the order COOH>COOMe>CONHAr. The quantum yields are markedly reduced when the ethylthio groups in positions 5 and 5′ are replaced by ethylsulfonyl groups (a tenfold reduction in ФA→B and a four- to fivefold reduction in ФB→A) The most considerable bathochromic shift of a long-wavelength band and the highest quantum yields of forward and reverse photoreactions were observed for 1,2-bis(4-bromo-2-ethylthio-3-thienyl) perfluorocyclopentene. 1,2- Bis (2-ethyl-5-ethylthio-4-methoxycarbonyl-3-thienyl)perfluorocyclopentene was structurally characterized by X-ray diffraction analysis. 相似文献
5.
A. M. Magerramov M. R. Bairamov M. G. Allakhverdieva M. A. Agaeva I. G. Mamedov M. A. Dzhavadov 《Russian Journal of Applied Chemistry》2007,80(1):115-117
Di(4-isopropenylphenoxy)alkanes were synthesized by condensation of 4-isopropenylphenol with symmetrical dihaloalkanes in the presence of KI promoter. Three-dimensional polymeric structures were prepared by compolymerization of these monomers with styrene. 相似文献
6.
Magerramov A. M. Bairamov M. P. Mamedov I. G. Dzhavadov M. A. 《Russian Journal of Organic Chemistry》2002,38(8):1210-1211
Russian Journal of Organic Chemistry - 相似文献
7.
M. M. Krayushkin M. A. Kalik D. L. Dzhavadov L. G. Vorontsova 《Chemistry of Heterocyclic Compounds》1998,34(7):802-807
The synthesis of 1,2-bis(2-ethylthio-3-thienyl)perfluorocyclopentene is described. Metallation with n-BuLi and subsequent treatment with DMF or CO2 gave the corresponding 5,5-diformyl and dicarboxy derivatives. The structure of 1,2-bis(2-ethylthio-3-thienyl)perfluorocyclopentene was studied by x-ray structural analysis. It was established that the unit cell contains two crystallographically independent molecules with geometrical and conformational parameters close to one another. The thiophene rings were inclined at an angle of 60° to the plane of the perfluorocyclopentene fragment, the thioalkyl groups were disposed antiparallel to it.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 117913. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 927–933, July, 1998. 相似文献
8.
L. G. Vorontsova M. M. Krayushkin Z. A. Starikova M. A. Kalik F. M. Stoyanovich O. Yu. Zolotarskaya D. L. Dzhavadov 《Russian Chemical Bulletin》1990,49(1):77-80
The structures of two hetarylethene photochromes,viz., 1,2-bis(2-ethyl-5-ethylsulfonylthien-3-yl)perfluorocyclopentene and 1,2-bis[5-(benzoxazol-2-yl)-2-methylthien-3-yl]perfluorocyclopentene,
were established by X-ray diffraction analysis. The conformational parameters of the title compounds are considered. The cyclopentene
ring in the former compound is planar and this ring in the latter compound adopts an envelope conformation. There are no overall
conjugated systems in the molecules under study. In both structures, the dihetaryl fragments are rotated with respect to the
perfluorocyclopentene fragments by ∼55°. The thiophene and benzoxazole rings in 1,2-bis[5-(benzoxazol-2-yl)-2-methylthien-3-yl]perfluorocyclopentene
are coplanar.
For Part 3, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 74–77, January, 2000. 相似文献
9.
Silicides and sulfides of transition metals attract great attention of researchers because of a wide spectrum of interesting magnetic, electronic, and optical properties. The crystal structure of FeSi, MnSi, and CoSi silicides is P213(B20), whereas FeS2, CoS2, and MnS2 sulfides have a structure of pyrite Pa3. Despite the great interest in these systems and the cubic symmetry of crystals, the structure and compressibility of these compounds at high pressures are still insufficiently studied. There is a significant spread (more than a factor of two!) in the bulk modulus and its pressure derivative for a single compound. Most studies were performed under nonhydrostatic conditions. In this work, the compressibility of FeSi and MnSi silicides (at pressures up to 35 GPa) and CoS2 sulfide (up to 22 GPa) has been studied by the X-ray diffraction method in a diamond anvil cell with the use of helium as the softest pressure-transmitting medium. The values obtained for the bulk modulus and its derivative—B = 178 ±3 GPa and Bp = 5.6 ± 0.5 for FeSi, B = 167 ± 3 GPa and Bp' = 4.6 ± 0.5 for MnSi, and B = 94 ± 2 GPa and Bp' = 6.9 ± 0.5 for CoS2—can be considered as the most reliable and can be used to test numerous theoretical models. The results for the compressibility of FeSi are important for the verification of models of the Earth’s core. 相似文献
10.
L. G. Vorontsova M. M. Krayushkin Z. A. Starikova M. A. Kalik F. M. Stoyanovich O. Yu. Zolotarskaya D. L. Dzhavadov 《Russian Chemical Bulletin》2000,49(1):77-80
The structures of two hetarylethene photochromes,viz., 1,2-bis(2-ethyl-5-ethylsulfonylthien-3-yl)perfluorocyclopentene and 1,2-bis[5-(benzoxazol-2-yl)-2-methylthien-3-yl]perfluorocyclopentene,
were established by X-ray diffraction analysis. The conformational parameters of the title compounds are considered. The cyclopentene
ring in the former compound is planar and this ring in the latter compound adopts an envelope conformation. There are no overall
conjugated systems in the molecules under study. In both structures, the dihetaryl fragments are rotated with respect to the
perfluorocyclopentene fragments by ∼55°. The thiophene and benzoxazole rings in 1,2-bis[5-(benzoxazol-2-yl)-2-methylthien-3-yl]perfluorocyclopentene
are coplanar.
For Part 3, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 74–77, January, 2000. 相似文献