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1.
Инвентарный номер: нет.
   
   Ч-92


    Чупахин, О. Н.
    Нуклеофильная атака на незамещенный атом углерода азинов и нитроаренов - эффективная методология построения гетероциклических систем [] = Nucleophilic attack on the unsubstituted carbon atoms of azines and nitroarenes as an efficient strategy for constructing heterocyclic systems : обзор / О. Н. Чупахин, Д. Г. Береснев // Успехи химии. - 2002. - Т. 71, N 9. - 803-818: схем. - Библиогр. : с. 817-818 (69 назв.) . - ISSN 0042-1308
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Обобщены данные о новых методах синтеза конденсированных азинов с помощью нуклеофильной атаки на незамещенный атом углерода азинов и нитроаренов. Рассмотрены тандемы реакций нуклеофильного присоединения AN-AN, нуклеофильного присоединения-замещения AN-S(ipso)N, нуклеофильного замещения S(H)N-S(ipso)N и S(H)N-S(H)N, протекающих между азинами и бинуклеофилами; внутримолекулярные S(H)N-реакции в ряду азинов и нитроаренов, а также другие методы синтеза конденсированных гетероциклов, основанные на процессах нуклеофильного замещения типа S(H)N

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2.
Инвентарный номер: нет.
   
   Т 42


   
    Тиокарбамоилированные производные полиаминов для сорбционного извлечения золота, серебра и ртути из растворов тиосульфатного выщелачивания / Ю. О. Привар [и др.] // Природные опасности, современные экологические риски и устойчивость экосистем: VII Дружининские чтения: материалы Всероссийской научной конференции с международным участием. - Хабаровск : ОмегаПресс, 2018. - С. 75-79
ББК 24
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: We have suggested a one-step method for the synthesis of thi-ocarbamoyl derivatives of polyallylamine (TСPAA) and polyaminostyrene (TСPAS) in the eutectic melt thiourea/ammonium thiocyanate, that is more safe and simple in comparison with the known method of functionalization using carbon disulfide. The resulting derivatives are insoluble and can be used as sor-bents without additional cross-linking. Sorption properties of TCPAA and TCPAS toward gold, silver and mercury ions have been studied in solutions of ammonia-thiosulfate leaching of gold and silver-containing sludge of Chalgan experimental workshop, which are also contaminated with mercury. It was shown that both TCPAA and TCPAS are efficient sorbents for silver, while ef-fective recovery of gold and mercury is achieved only with low- and medium-substituted TCPAA.

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3.
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    Синтез енаминокетонов на основе фторсодержащих алкоксиенонов / Н. В. Лосева, Ю. О. Эдилова, В. И. Салоутин [и др.] // Система управления экологической безопасностью : сборник трудов XVII международной научно-практической конференции, посвященный различным теоретическим и практическим аспектам экологической безопасности. - Екатеринбург, 2023. - С. 237-243
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1,3-Diketenes are promising polyfunctional building blocks that can be used to obtain complex aliphatic, aromatic, and heterocyclic structures. The presence of fluorinated carbon radicals in the alkoxyenone molecule significantly affects its properties and reactivity, which makes it possible to use these substances in the development of green chemistry and increases the environmental safety of synthesis processes.

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4.
Инвентарный номер: нет.
   


   
    Исследование рециклинга углеродных волокон путем термического сольволиза полимерных композиционных материалов с применением каменноугольного пека / Е. И. Андрейков, А. С. Кабак, Н. Ю. Бейлина, С. И. Мишкин // Химия в интересах устойчивого развития. - 2018. - Т. 26, № 6. - С. 571-576
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
РЕЦИКЛИНГ УГЛЕРОДНЫХ ВОЛОКОН -- ТЕРМИЧЕСКИЙ СОЛЬВОЛИЗ -- ПОЛИМЕРНЫЕ КОМПОЗИЦИОННЫЕ МАТЕРИАЛЫ -- КАМЕННОУГОЛЬНЫЙ ПЕК -- COAL TAR PITCH -- RECYCLING -- CARBON FIBRES -- THERMAL SOLVOLYSIS -- FIBRE-REINFORCED POLYMERS
Аннотация: Исследован процесс рециклинга углеродных волокон (УВ) путем термического сольволиза полимерных композиционных материалов в среде каменноугольного пека в интервале температур 320-400 °С. Изучено влияние термообработки в среде каменноугольного пека на свойства выделенных рециклингом УВ. Представлены результаты исследования методом растровой электронной микроскопии и механических испытаний выделенных УВ в сравнении с исходными УВ, используемыми для создания полимерных композиционных материалов.

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5.
Инвентарный номер: нет.
   
   W 20


   
    Wall Rock Metasomatism and Formation Conditions of the Silver-Polymetallic Bol'shoi Kanimansur Deposit (Tadjikistan) [Text] / O. V. Rusinova, V. L. Rusinov, E. D. Syngaevskii , L. I. Bochek, M. I. Lapina, Yu. V. Vasyuta // Geology of Ore Deposits. - 2001. - Vol. 43, № 5. - P386-405. - Bibliogr. : p. 405 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SILVER-POLYMETALLIC DEPOSIT -- CARBON -- METASOMATIC TRANSFORMATIONS -- REGIONAL MAGMATISM
Аннотация: Products of the hydrothermal alteration of rocks and vertical zonality at the Kanimansur silver-polymetallic deposit (Tadjikistan) have been studied. On the basis of these studies, physicocochemical conditions of metasomatism and ore formation were reviewed. Condensed carbonaceous matter in wall rock metasomatites and ores were found and carbon isotopic composition of this carbonaceous matter and composition of gases in open pores in rocks of the deposit were analyzed. As a result of geological observations, analysis of mineral parageneses, compositions of minerals, and chemistry of wall rock alteration, the following four stages of the hydrothermal process were distinguished: autometasomatic, propylitic, preore chlorite-sericite, and synore. Mineral geothermometers were used to estimate the temperatures of metasomatism, which varied within the range 200-250°C for all stages except for the autometasomatic stage (450-500°C). The formation of unhydrated light micas, quartz, and highly ferruginuous chlorites was related to acid preore metasomatism. The stability of these chlorites testifies to a slight increase in the acidity of solutions during the preore stage (pH not less than 3.5). The wall rock metasomatites and sulfide ores are characterized by a relatively rare occurrence of pyrite due to a low activity of the sulfide sulfur during hydrothermal alterations (logaS2 = -7...-10). The low activity of the sulfide sulfur is confirmed by the fact that iron is tied in a highly ferruginuous chlorite. At upper ore levels, even zinc is tied in chlorite. This testifies to a much greater aS2 /aO2 value. Judging by the participation of carbonaceous matter in the process, ore components were deposited due to a local increase in the alkalinity at the ore-forming stage and oxidation of reduced fluids. The established features of metasomatic transformations, are related to particulars of the regional magmatism.????

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6.
Инвентарный номер: нет.
   
   W 20


   
    Wall Rock Alterations and Physicochemical Conditions of the Sovetsk Gold Deposit Formation (Enisei Ridge) [Text] / O. V. Rusinova, V. L. Rusinov, S. S. Abramov, S. V. Kuznetsova, Yu. V. Vasyuta // Geology of Ore Deposits. - 1999. - Vol. 41, № 4. - P276-294. - Bibliogr. : p. 294 (24 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
WALL ROCK ALTERATIONS -- PHYSICOCHEMICAL CONDITIONS -- DEPOSIT FORMATION -- GOLD
Аннотация: The mode of distribution of carbonaceous matter (CM) and specific characteristics of the metasomatic zonation were studied, as well as physicochemical conditions of the ore deposition and wall rock alteration at the Sovetsk gold deposit. The deposit relates to the quartz vein low-sulfide type and is hosted by carbonaceous rock sequences ("black shales") within a wide shear zone. This shear zone spreads along the regional Ishimbin strike-slip deep fault. The Proterozoic Tatarsk-Ayakhtin granitic complex, intruding the ore bearing rocks, composes the core of the ore district. Granites compose a pluton roof, where Olimpiada and Veduga gold deposits occur, and in contact zones the Eldorado and Pereval'ninsk deposits are located. The Sovetsk deposit is situated farther from the pluton contacts. The rocks of the ore-bearing sequence are metamorphosed in the chlorite-muscovite greenschists facies. A specific feature of wall rock alteration is unclear lateral metasomatic zonation with gradual transition between zones and alternating bands of strong and weak alterations. The main metasomatic minerals are muscovite and chlorite. Quartz and carbonate are subordinate, and ilmenite, rutile, monoclinic, and hexagonal pyrrhotites are accessories. Above ore bodies turmaline is rather common, but inside and below ore bodies albite occurs. The distribution and zonation of metasomatic parageneses allow us to call this kind of wall rock alteration as "disseminated metasomatism." The rock alteration developed sinchroneously with dynamic metamorphism in the strongly anisotropic sheared rocks. The absence or low intensity of acidic metasomatism is an important feature of the deposit. The temperature of metamorphism was 500-460°C, of wall rock alteration - 460-350°C, and of ore deposition (from early to late stages) from 380 to 150°C. The disseminated CM was metamorphosed to the low graphitic stage, and the condensed CM in veinlets corresponds to the late antracitic stage. The fugacity of oxygen and sulfur in the fluids was estimated with ilmenite = rutile + pyrrhotite equilibrium, composition of pyrrhotite and chlorite. The oxygen fugacity was lower than that of the ilmenite-magnetite buffer, and sulfur fugacity was lower than that of the pyrite-pyrhothite buffer. Nearer to the ore bodies the sulfur fugaeity increases, and inside ore bodies it corresponds to the pyrite + pyrrhotite paragenesis. The calculations of the oxygen fugacity with the gas composition in the system C-O-H suggests that the ratios CO2/CH4/H2O are close to the QFM and ilmenite-magnetite buffers and similar to that received with some mineral fugometers. Hydrocarbons with 2-4 carbon atoms appear not to be in equilibrium with CO2. The variation intervals of pH, fo2 and (before the ore deposition) of T are rather narrow. The pressure under metamorphism exceeded 1.9 kbar, but it decreased to the beginning of ore deposition to 0.7 kbar. This means that ores were deposited in an extension environment.

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7.
Инвентарный номер: нет.
   
   T 60


   
    TIO2/C nanocomposites prepared by thermal annealing of titanium glycerolate as anode materials for lithium-ion batteries / G. S. Zakharova, Z. A. Fattakhova, A. Ottmann, L. Moller, E. Thauer, R. Klingeler, E. I. Andreikov, I. S. Puzyrev, Q. Zhu // Journal of materials science. - 2018. - Vol. 53, № 17. - P12244-12253
ББК 24
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: TiO2/C nanocomposites have been synthesized by developing a facile route based on the annealing of titanium glycerolate in inert atmosphere at 250–850 °C. X-ray diffraction studies reveal that the annealing temperature determines the crystal structure of the TiO2 phase in the compounds, which can be amorphous, anatase, and rutile. In contrast, the nanosized rod-like morphology which to a certain extent is predefined by the titanium glycerolate precursor does not depend on the annealing temperature. The carbon content of the TiO2/C composites amounts to 16–29 wt% and shows up, e.g., in the characteristic Raman D and G bands. Anatase-structured TiO2/C, which is obtained at 600 °C, exhibits the best electrochemical performance among the studied materials. Without the addition of carbon black, it reaches an initial specific discharge capacity of 378 mA h g−1 at 100 mA g−1 and exhibits excellent rate capability with a capacity of 186 mA h g−1 at 1000 mA g−1.

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8.
Инвентарный номер: нет.
   
   T 44


   
    Thermal stability of new sorption materials based on polysiloxanes / L. K. Neudachina, A. Y. Golub, E. M. Gorbunova, Yu. G. Yatluk // Glass Physics and Chemistry. - 2011. - Vol.37, №6. - С. 603-612
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
THERMAL STABILITY -- THIOCARBAMOYLATED POLYSILOXANES -- SILOXANE MATRIX
Аннотация: The thermal stability of the unmodified, aminated, and thiocarbamoylated polysiloxanes has been studied. The siloxane matrix is stable in the temperature range up to 800°C. For the first time, mass spectrometry has been applied to the analysis of the composition of the gaseous products of thermal decomposition of the studied polysiloxanes. It has been shown that, in the process of thermal decomposition, the terminal functional groups are detached and oxidized. Water, ammonia, nitrogen, carbon, and sulfur (in the case of thiourea-modified sorbent) oxides are formed predominantly. The quantitative removal of functional groups during heating up to 800°C has been confirmed by IR spectroscopy. A mechanism of thermal decomposition of polysiloxane xerogels has been proposed. It has been found that adsorption of platinum increases the thermal stability of the samples

\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2011, V. 37, N 6, P.603-612.pdf
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9.
Инвентарный номер: нет.
   
   T 44


   
    The first case of direct coupling of heterocycles with calixarenes. Reaction of resorcinarenes with 1,2,4-triazin-5(2H)-ones [Text] / O. N. Chupakhin, G. L. Rusinov, N. A. Itsikson, D. G. Beresnev, I. L. Nikolaeva, A. R. Burilov, A. I. Konovalov // Heterocyclic Communications. - 2004. - Vol. 10, № 1. - P15-18 : ил. - Библиогр.: с. 18 (8 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CALIXARENE -- CARBON -- RESORCINOL DERIVATIVE -- TRIAZINE DERIVATIVE
Аннотация: A convenient method for an one-step coupling of resorcinarenes with 3-R-1,2,4-triazin-5(2H)-ones, involving nucleophilic addition to the unsubstituted carbon atom C-6 of triazine ring, has been worked out.

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10.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of podands modified with thiosemicarbazide and fluoroalkyl(hydroxy)pyrazoline fragments / V. I. Filyakova, P. A. Slepukhin, N. S. Boltacheva, E. B. Letova, V. N. Charushin // Russian Journal of General Chemistry. - 2017. - Vol. 87, № 5. - P957-962
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PODANDES -- X-RAY DIFFRACTION ANALYSIS -- ACETIC ACID -- ORGANIC ACIDS
Аннотация: 1,8-Bis(diisothiosemicarbazido)-3,6-dioxaoctane have been synthesized by subsequent treatment of 2,2 -(ethylenedioxy)bisethylamine with carbon disulfide, sodium chloroacetate, and hydrazine hydrate. 1,8-Bis- (diisothiosemicarbazido)-3,6-dioxaoctane has reacted with lithium 1,1-difluoropenta-2,4-dionate in glacial acetic acid to yield 1,8-bis[5R*,5 R*(5-hydroxy-5-difluoromethyl-4,5-dihydro-3-methyl-1H-pyrazol-1-yl)-1-carbothioamido]-3,6-dioxaoctane. The molecular and crystal structure of the product has been determined by X-ray diffraction analysis.

\\\\Expert2\\NBO\\Russian Journal of General Chemistry\\2017 V 87 P957.pdf
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