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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 330 (1988), S. 241-247 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of N-(N′,N′-Dialkyl(aryl)amino-thiocarbonyl)benzimidoylchlorides with Potassium ThiocyanateThe treatment of the title compound N-(amino-thiocarbonyl)-benzimidoylchloride 1 with potassium thiocyanate leads in dependence on the solvents (methanol, acetic acid, acetone) either to the 1,3,5-thiadiazine-2-thione 2a-d or to the ring opened isothiocyanate 4a, b. In the case of methanol the N-(amino-thiocarbonyl)benzimidates were formed as by-products.The structure of the products is confirmed by analytical data and by chemical transformations. 2a reacts with methyl iodide to form the 2-methylthio-6-morpholino-4-phenyl-1,3,5-thiadiaziniumiodide 3a. From 4a and water the N-(morpholino-thiocarbonyl)benzamide 5a arises. The reaction of morpholine with 4a yields the benzamidine 6a.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 523 (1985), S. 153-160 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Formation of N-(Thiocarbamoyl) benzamidinesN-(Thiocarbamoyl)benzamidines 1 and N-(Thiocarbamoyl)-N′-phenyl-benzamidines 2 form in alcoholic solutions with Ni2+, Cu2+, Pd2+, Co3+, and Ag+ ions well crystallized chelates 1a —h and 2a—h, respectively, with N/S coordination.The X-ray photoelectron spectra evidence the NH group as ligator in the case of chelates of 1 and the increased donor capacity compared with the isosteric oxygen ligator atom bound to nickel. This is confirmed by d-1H-n.m.r. spectroscopy analyzing the value of ΔGc≠ for the rotational barrier for the Et2N group of 1a
    Notes: N-(Thiocarbamoyl)banzamidine 1 und N-(Thiocarbamoyl)-N′-phenyl-benzamidine 2 bilden mit Ni2+-, Pd2+-, Co3+- und Ag+-Ionen in alkoholischer Lösung kristalline Innerchelatkomplexe1a—h und 2a—h mit N/S-Koordination.Aus ESCA-Spektren wird im Falle der Chelate von 1 als Haftgruppe NH nachgewiesen und ihre höhere Donorfähigkeit im Vergleich mit dem isosterne Sauerstoffhaftatom gegenüber Nickel fest-gestellt. Dies wird durch d-1H-NMR-spektroskopisch bestimmte Werte von ΔGc≠ für die behinderte Rotation der Et2N-Gruppe an 1 a unterstützt.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 69 (1904), S. 223-244 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 543 (1986), S. 186-191 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Heavy Metal Chelates of α-Cyano-β-amino-dithioacrylatesThe inner metal chelates of PdII, NiII, CoIII, and AgI with α-cyano-β-amino-dithioacrylates have been prepared. The coordination of the dithioester group and the amine nitrogen (S/N-coordination) has been proved by the chemical shift of the S2p and N1s electron binding energies in the ESCA spectra.
    Notes: Es wurden Innerchelatmetallkomplexe des PdII, NiII, CuII, CoIII und AgI mit α-Cyano-β-amino-dithioacrylsäureestern dargestellt. Die Koordination der Dithiocarbonester-gruppierung und des Aminstickstoffs (S/N-Koordination) wird durch die chemische Verschiebung der S2p- und N1s-Elektronenbindungsenergien in den ESCA-Spektren bewiesen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 39 (1988), S. 481-487 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: On the basis of low-density polyethylenes with different molecular weight and pretreatment the influence of molecular structure and morphology on the stress crack resistance was investigated. The significance of the tie-molecules was proved also for this type of loading. Analogously to tensile strength also in the case of stress crack resistance a critical molecular mass of about 70000 g/mol is determined for the formation of tie-molecules. The efficiency of the tie-molecules can, however, be modified under the influence of shear or precipitation from the solution.
    Notes: Auf Basis von Polyethylenen niederer Dichte mit unterschiedlicher Molekülmasse und Vorbehandlung werden Untersuchungen zum Einfluß der molekularen Struktur und Morphologie auf die Spannungsrißbeständigkeit durchgeführt. Auch für diesen Belastungsfall läßt sich die Bedeutung der „tie-Moleküle“ nachweisen. Analog der Zugfestigkeit wird für die Spannungsrißbeständigkeit eine kritische Molekülmasse bei ca. 70000 g/mol für die Bildung von tie-Molekülen ermittelt, wobei die Effektivität der tie-Moleküle jedoch unter dem Einfluß von Scherung bzw. Ausfällung aus der Lösung verändert werden kann.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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