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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 52 (1998), S. 831-836 
    ISSN: 1572-8943
    Keywords: DSC ; fullerenes ; solubility ; solvated crystals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Differential scanning calorimetry (DSC) was used to study the binary systems of C60-o-xylene and C70-o-xylene and the ternary system C60-C70-o-xylene. Fullerene C60 formed solvated crystals C60·2C8H10 with incongruent melting point 320 K and with enthalpy of decomposition 31±3 kJ (mol of C60)-1. Two solvated crystals of C70 with incongruent melting points 283 and 369 K, and with decomposition enthalpies 18.5±2.2 and 23.0±1.5 kJ (mol of C70)-1, were formed from o-xylene solutions. Three ternary compositions with C60/C70 mole ratios of 3:1, 1:1 and 1:3 were scanned by DSC.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 56 (1999), S. 175-181 
    ISSN: 1572-8943
    Keywords: fullerene ; solubility ; solvates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Compositions of the solid solvates of C60 with 1,2-dichlorobenzene and 1,3,5-trimethylbenzene were determined with the help of experimental procedures developed. Possible correlations between compositions and thermodynamic properties were discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 33 (1988), S. 1221-1224 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Für die Analyse von organischen und anorganischen Substanzen wurde ein DSC-Verfahren entwickelt. Neben dem “herkömmlichen” wurde auch ein “Kurzverfahren” angewendet. Der Vergleich der Ergebnisse der zwei Verfahren bei der Reinheitsbestimmung von Standardproben, wie z.B. Indium, Biphenyl und Koffein zeigte eine gute übereinstimmung. Das Kurzverfahren kann somit gut zur Bestimmung des Verunreinigungsgrades von Halbleitern wie z.B. Bis-(äthylendithio)-tetrathiofulvalen und Tetrathiotetrazen genutzt werden. Diese Verbindungen zeigen nämlich während des Schmelzens mitunter Zersetzungserscheinungen.
    Abstract: РЕжУМЕ МЕтОД Дск Был РАжРАБО тАН Дль АНАлИжА ОРгАНИЧЕскИх И НЕОРг АНИЧЕскИх ВЕЩЕстВ. кРОМЕ “ОБЩЕгО МЕтОДА ”, Был ИспОльжОВАН И “к ОРОткИИ” МЕтОД. сОпОстАВлЕНИЕ ЁтИх ДВУх МЕтОДОВ Дль ОпРЕДЕлЕНИь ЧИст Оты тАкИх стАНДАРтНы х ОБРАжцОВ, кАк ИНДИИ, БИФЕНИл И кО ФФЕИН, пОкАжАл хОРОшЕЕ сОВпАДЕНИЕ Р ЕжУльтАтОВ, ЧтО пОжВО лИлО ИспОльжОВАть “кОРОт кИИ” МЕтОД Дль кОлИЧЕ стВЕННОгО ОпРЕДЕлЕНИь пРИМЕсЕ И В тАкИх ОРгАНИЧЕскИ х пОлУпРОВОДНИкАх, кАк БИс/ЁтИлЕНДИтИО/тЕтР АтИОФУльВАлЕН БИс/ЁтИлЕНДИтИО/тЕтР АтИОФУльВАлЕН И тЕтРАтИОтЕтРАцЕН. Ё тИ сОЕДИНЕНИь НЕУстО ИЧИВы И В НЕкОтОРОИ стЕпЕНИ НАЧИНАУт РАжлАгАтьс ь пРИ плАВлЕНИИ.
    Notes: Abstract DSC method was developed for the analysis of organic and inorganic substances. Beside the “common” method “short” method is applied. Comparison of these two methods for the determination of purity on standard samples like indium, benzil, caffeine showed good similarity of the results so it allowed to use a “short” method for the determination of the amount of impurity in semiconductors such as bis(ethylenedithio)tetrathiofulvalen and tetrathiotetracene. These compounds are unstable and begin to decompose some times during melting.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 46 (1996), S. 347-352 
    ISSN: 1572-8943
    Keywords: DSC ; optical densities ; thermal stability ; three-component interpolymer complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new type of three-component interpolymer complexes (3IPCM) formed by two similarly charged polyelectrolytes and an oppositely charged low molar mass compound was studied by DSC, NMR and X-ray methods. The low molar mass monobasic compounds in these complexes act as mediators. This type of complexes differs from earlier-obtained 3IPCM, which contained a dibasic low molar mass mediator. The present 3IPCM were obtained from two polymers (polyacrylic acid and sodium polyphosphate) and bases such as 4-vinylpyridine and 2-methyl-5-vinylpyridine.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-9171
    Keywords: fullerenes ; XP spectra ; IR spectra ; EEL spectra ; differential thermal analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Crystals containing up to 30 wt. % CS2, according to the data of IR and X-ray photoelectron spectroscopy, were isolated from the C60-TSeT-CS2 (TSeT is tetraselenotetracene) system. The unusually high concentration of carbon disulfide results in the complete sublimation of the crystals at a relatively high temperature (520 °C). The electron energy loss spectra of the crystals obtained were measured and analyzed.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of engineering physics and thermophysics 58 (1990), S. 475-483 
    ISSN: 1573-871X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Equations are derived that describe the technological process of natural underground sulfur-cleaning of natural gases containing hydrogen sulfide during their passage through a chemically active porous medium, and exact solutions are obtained of model problems.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-9171
    Keywords: fullerene C60 ; extraction ; thermal stability ; TG ; DSC ; phase transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Extraction of fullerenes from carbon soot by trichloroethylene has been studied. We have found that C60 forms a solvate with trichloroethylene (C60 · C2HCl3:a=31.31(1);b= 10.156(4);c=10.146(4) Å;V=3228.6 Å3,Z=4,d calc=1.752 g cm−3, orthorhombic symmetry). Its thermal stability has been studied using TG and DSC. A phase transition of the first order at 167 K has been detected.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pharmaceutical chemistry journal 12 (1978), S. 1347-1349 
    ISSN: 1573-9031
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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