Центральная Научная Библиотека УрО РАН

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   N 52


    New manganese(II) 2d-polymer with deprotonated hydroxytetrazine bridges [Text] / M. A. Kiskin [и др.] // Inorganic Chemistry Communications. - 2005. - Vol. 8, № 6. - P524-528

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A reaction of pivalate polymer [Mn(OOCCMe3)2(EtOH)]n (1) with 3-hydroxy-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine (2, L) in EtOH solution under inert atmosphere gives rise to an antiferromagnetic 2D-polymer [Mn(?-N,N?O-3,5-Me2C3HN2C2(O)N4)2]n (4). According to the X-ray analysis data, M(L–H)2 units form a 2D-infinite network in the lattice of compound 4 where L–H is a starting deprotonated hydroxytetrazine. The reaction of 1 with bis[3,5-(dimethylpyrazolyl)]-1,2,4,5-tetrazine (3) in MeCN solution in air results in an antiferromagnetic hexanuclear pivalate cluster Mn6(?4-O)2(?-OOCCMe3)10(L1)4 (5) where L1 is a dimethylpyrazole molecule – product of hydrolytic splitting of initial bispyrazolyltetrazine.

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   N 57


    Ni(II)-Mediated nitrosation of oximes bearing an alfa-CH2 group [Electronic resource] / A. V. Makarycheva-Mikhailova, P. V. Gushchin, M. N. Kopylovich, I. N. Ganebnuikh, V. N. Charushin, M. P. Haukka, J. L. Armando , V. Yu. Kukushkin // Inorganic Chemistry Communications. - 2006. - Vol. 9, № 8. - P869-871

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Heating of NiCl2 · 6H2O with 10-fold excess of an oxime having an CH2 group (1–4) at 100 °C for 1 day in air leads to the formation of the dioxime/ato complexes [Ni(dioxime/ato)2] (5–8) formed due to a novel type of metal-mediated nitrosation. Compounds 5–8 were characterized by elemental analyses, FAB (5–7) or APCI (8) mass-spectrometry, IR, 1H and 13C{1H} spectroscopies (for 8), and X-ray structural study has been performed for 5 and 8; the corresponding ketones (9–12) were identified by LC–MS.

\\\\Expert2\\nbo\\Inorganic Chemistry Communications\\2006, v.9, p.869.pdf
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   R 45


    Resistance of polyfluorinated complete esters of polyhydric alcohols to thermal oxidation: Comparison with nonfluorinated analogs [Electronic resource] / T. I. Gorbunova, S. M. Sorokina, A. Ya. Zapevalov, V. I. Saloutin // Russian Journal of General Chemistry. - 2006. - Vol. 76, № 11. - P1795-1800

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Complete esters of pentaerythritol, trimethylolpropane, and 2,2-dimethyl-1,3-propanediol with polyfluorinated carboxylic acids were prepared by esterification. As determined by differential thermal gravimetric analysis in air, the resistance of the esters to thermal oxidation decreases in going from pentaerythritol derivatives to those of trimethylolpropane and then to those of 2,2-dimethyl-1,3-propanediol. The compounds synthesized surpass their nonfluorinated analogs in the resistance to thermal oxidation.

\\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2006, V. 76, N 11, p.1795.pdf
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   P 48

    Pervova, M. G.
    Determination of 1,2,3-benzotriazole in aqueous solutions and air by reaction-gas-liquid chromatography [Electronic resource] / M. G. Pervova, V. E. Kirichenko, V. I. Saloutin // Journal of Analytical Chemistry. - 2010. - Vol. 65, № 3. - P276-279 : табл., граф. - Bibliogr. : p. 279 (18 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BENZOTRIAZOLE -- AQUEOUS SOLUTIONS -- AIR -- CHROMATOGRAPHY -- REACTION-GAS-LIQUID CHROMATOGRAPHY
Аннотация: A procedure is developed for the gas-chromatographic determination of 1,2,3-benzotriazole including preliminary derivatization with acetic anhydride in an aqueous solution followed by the extraction the derivative with toluene. The procedure is applied to the analysis of water samples, process solutions for treating metals, air of the working zone, and industrial emissions. Determination limits in water media are 0.01 mg/L and in the air of the working zone, 0.1 mg/m3.

\\\\Expert2\\nbo\\Journal of Analytical Chemistry\\2010, V. 65, N 3, p. 276-279.pdf
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   F 97


    Fundamental absorption edge of NiO nanocrystals [Electronic resource] / V. I. Sokolov, A. V. Druzhinin, D. G. Kim, N. B. Gruzdev, A. Ye. Yermakov, M. A. Uimin, I. V. Byzov, N. N. Shchegoleva, V. B. Vykhodets, T. E. Kurennykh // Physica B: Condensed Matter . - 2013. - Vol. 430. - С. 1-5. - Bibliogr. : p. 5 (29 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
TRANSITION METAL OXIDE -- OPTICAL PROPERTIES -- CHARGE TRANSFER TRANSITIONS
Аннотация: NiO nanocrystals with the average size of 5, 10 and 25 nm were synthesized by gas-condensation method. The well-defined increase of the optical density D near the fundamental absorption edge of NiO nanocrystals in the range of 3.5–4.0 eV observed after the annealing in air is caused by the oxygen content growth. It is the direct experimental evidence of the fact that p—d charge transfer transitions form the fundamental absorption edge

\\\\expert2\\NBO\\Physica B\\2013, v.430, p. 1-5.pdf
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   A 23


    Aerobic oxidative C-H/C-H coupling of azaaromatics with indoles and pyrroles in the presence of TiO2 as a photocatalyst [Electronic resource] / I. A. Utepova, M. A. Trestsova, O. N. Chupakhin, V. N. Charushin, A. A. Rempel // Green Chemistry. - 2015. - Vol. 17, № 8. - С. 4401-4410. - Bibliogr. : p. 4409-4410 (30 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BOND ACTIVATION -- INHIBITORS -- HYDROGEN
Аннотация: In this paper we wish to report a highly selective and benign method for the double C-H/C-H coupling of azaaromatics with indoles or pyrrole in the presence of air oxygen/TiO2, as an effective photocatalytic oxidative system. It has been shown that this versatile approach can be applied for direct C-H functionalisation of a variety of azaaromatic systems, such as mono-, di- and triazines, substituted and unsubstituted azines and their benzo-annelated analogues.

\\\\expert2\\nbo\\Green Chemistry\\2015, v.17, N 8, p.4401-4410.pdf
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   S 98


    Synthesis of 2-Aryl-1,2,3-triazoles by Oxidative Cyclization of 2-(Arylazo)ethene-1,1-diamines: A One-Pot Approach [Electronic resource] / K. D Gavlik, S. G. Lesogorova, E. S. Sukhorukova, J. O. Subbotina, P. A. Slepukhin, E. Benassi, N. P. Belskaia // European Journal of Organic Chemistry. - 2016. - № 15. - С. 2700-2710

ББК 54
Рубрики: ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ
Кл.слова (ненормированные):
SYNTHETIC METHODS -- nUCLEOPHILIC ADDITION -- OXIDATIVE DEQUATERNIZATION
Аннотация: A one-pot approach for the synthesis of 2-aryl-5-amino-1,2,3-triazoles is reported. This approach involves a tandem nucleophilic addition of alkylamines to hydrazonoyl cyanides and in situ oxidative cyclization of the resulting 2-(aryl-azo)ethene-1,1-diamines in the presence of copper(II) acetate and air. The described one-pot procedure is characterized by good yields, excellent selectivity, methodical simplicity, and uses readily available chemicals. This method was applied to the gram-scale synthesis of 2-aryl-1,2,3-triazoles.

\\\\expert2\\NBO\\European Journal of Organic Chemistry\\2016, v. 15, p. 2700.pdf
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   C 91


    Crystal structure, spectral and thermal properties of 1,2-bis[2-(4,4,4-trifluoro-1-hydroxy-3-oxobut-1-enyl)phenoxy]-ethane and luminescent properties of its complexes with Al(III) and Eu(III) [Electronic resource] / L. A. Khamidullina, K. L. Obydennov, P. A. Slepukhin, I. S. Puzyrev // Journal of Molecular Structure. - 2016. - Vol. 1125. - С. 550-557

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
LANTHANIDE COMPLEXES -- ENOL-TAUTOMERISM -- BETA-DIKETONES
Аннотация: Describing the crystal structure, packing, FT-IR, UV-Vis and NMR spectra and thermal properties of new polydentate O-ligand based on aryl-beta-diketone moieties connected by ethylene glycol spacer is the subject of this article. The results of IR, UV-Vis and H-1 NMR spectroscopy as well X-ray crystallography of 1,2-bis[2-(4,4,4-trifluoro-1-hydroxy-3-oxobut-1-enyl)phenoxy]-ethane (BTFPE) indicate that the compound exists in solution and in solid as enol. The crystal structure analysis shows that BTFPE has C2/c group of the monoclinic system. Typical S(6) intramolecular hydrogen bond occurs in each 1,3-diketo moiety. This bond is asymmetric and the H atom is closest to the 0 atom adjacent to the phenyl ring. The packing of the crystal is sustained by numerous C-H center dot center dot center dot O, O-H center dot center dot center dot F, C-H center dot center dot center dot F interactions. In the crystal, supramolecular zig-zag chains are formed along the c-axis. Short contacts interconnect the molecules into a two-dimensional layered structure wherein each molecule is node between chains. According to the thermal investigation this compound is stable up to 200 degrees C in air atmosphere, above this temperature it decomposes. Photoluminescent properties of aluminum(III) and europium(III) complexes of BTFPE were evaluated in chloroform solution and in the solid state. Aluminum complex of BTFPE shows blue luminescence with maximum at 445 nm. Europium complex exhibits intense red color luminescence at 613 nm from central Eu(III) ion through the excitation of the ligand.

\\\\expert2\\NBO\\Journal of Molecular Structure\\2016, v.1125, p.550-557.pdf
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