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  • 1
    Electronic Resource
    Electronic Resource
    Morphology of a liquid-crystalline polyester film (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 26 (1988), S. 515-526 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Morphological studies are reported for a thermotropic liquid crystalline polyester. Small angle light scattering studies were carried out as a function of temperature using Hv and Vv polarization with photographic as well as photometric techniques. No scattering was observed from a thin film cast from a dilute solution of the polymer in a highly volatile solvent. When the film was heated, scattering of light was observed above the glass transition temperature of the polyester. The scattering was found to be azimuthally dependent with Vv intensities being much higher than the corresponding Hv intensities. The size of the morphological features responsible for SALS patterns were calculated and were found not to change significantly with temperature ranging from glass transition temperature to the solid-nematic transition temperature of the polyester. The WAXS pattern of solution cast polymer was representative of an amorphous structure. Solution cast films heat treated under various conditions (all above the Tg of the polymer) contained crystalline as well as amorphous structures. The maximum apparent crystallinity for annealed samples was of the order of 30%.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1988.090260304
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structural Studies on Indium and Tin Thiobenzoates (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1093-1098 
    Details
    ISSN: 0009-2940
    Keywords: Indium tris(thiobenzoate) ; Triethylammonium tetrakis(thiobenzoato)indate ; Tin, butyl-, tris(thiobenzoate) ; Tin, dichloro-, bis(thiobenzoate) ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Indium(III) and tin(IV) thiocarboxylates were prepared and characterized on the basis of their IR, 13C- and 19Sn-NMR data. Indium tris(thiobenzoate) (1) decomposes into a sulfido complex In (S)[S(O)CPh] (2a). The corresponding tris(thioacetate) In[S(O)CMe]3 is thermally too unstable to be isolated. The anionic tetrakis complex [Et3NH]{In[S(O)CPh]4} (3) was characterized by X-ray crystallography which revealed a distorted tetrahedral coordination at the In atom. X-ray diffraction analysis of the complexes BuSn[S(O)CPh]3 (4) and Cl2Sn[S(O)CPh]2 (7) showed distorted tetrahedral and cis-octahedral structures, respectively.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290918
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Tetra o-Tolyltin and its Halogen Derivatives (1966)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 344 (1966), S. 102-106 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetra-o-tolylzinn wurde in 45proz. Ausbeute mit Hilfe der Wurtz-Reaktion (Petroläther als Lösungsmittel; Hg als Katalysator) dargestellt. Durch Jodierung wurden daraus Tri-o-tolylzinnjodid und Di-o-tolylzinndijodid erhalten; ferner gelang die Darstellung von Tri-o-tolylzinnfluorid.
    Notes: Tetra-o-tolyltin has been prepared in 45% yield for the first time by Wurtz reaction. Optimum yield is obtained using pet-ether (b. p. 65-85) as solvent and small amounts of mercury as catalyst. A mechanism for the role of mercury in the reaction is suggested. Tri-o-tolyltin iodide and hitherto unknown di o-tolyltin di-iodide have been prepared in 65% and 55% yields respectively by controlled iodination of the compound. Tri o-tolyltin fluoride has also been synthesised for the first time in almost quantitative yield.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19663440114
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    Paper (German National Licenses)
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