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  • 11
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 49 (1961), S. 238-240 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Tab.
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  • 12
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 91 (1966), S. 212-230 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 2,3,6-Glucose-tricarbanilate prepared by degradation of cellulosetricarbanilate in 1-hydroxy-2-methoxy-ethane in presence of p-toluenesulfonic acid was condensed with phosphorpentoxide in a mixture of chloroform-dimethyl sulfoxide. Light scattering measurements gave degrees of polymerization up to 640. Contrarily to cellulose- and amylosetricarbanilates there was no definite relation between the STAUDINGER-Indices and molecular weights. Also no angular dependence of the scattered light was found. The products therefore are branched. The side chains are bound to the carbanilate groups, for after alkaline saponification of the polyglucosans the degrees of polymerization decrease to about 60. Degradation experiments with α-amylase and cellulase, optical rotation in tetraethylammoniumhydroxide and viscosity measurements of polyglucosans compared with those of different cellodextrins showed clearly that only 1,4-β-glucosidic linkages are present in the synthetic polysaccharides and that the products are not branched.
    Notes: 2,3,6-Glucosetricarbanilat  -  aus Cellulosetricarbanilat durch Alkoholyse in 1-Hydroxy-2-methoxy-äthan in Gegenwart von p-Toluolsulfosäure hergestellt  -  wurde in Chloroform/Dimethylsulfoxid durch Phosphorpentoxid kondensiert. Streulichtmessungen der Polykondensate ergaben Polymerisationsgrade bis 640. Zum Unterschied von Cellulose- und Amylosetricarbanilaten wurde keine eindeutige Beziehung zwischen STAUDINGER-Indices und Molekulargewichten gefunden. Die Streulichtintensität ergab keine Winkelabhängigkeit. Die Produkte müssen daher verzweigt sein. Die Seitenketten sind an die Carbanilatgruppen gebunden, denn nach alkalischer Verseifung lagen die Polymerisationsgrade bei ca. 60. Aus Abbauversuchen mit α-Amylase und Cellulase, Drehwerten in Tetraäthylammoniumhydroxid und vergleichenden Viskositätsmessungen an den Polyglucosanen und verschiendenen Cellodextrinen geht hervor, daß nur 1,4-β-glucosidische Bindungen in den synthetischen Polysacchariden vorliegen und daß die Produkte unverzweigt sind.
    Additional Material: 2 Ill.
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  • 13
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 416 (1975), S. 256-262 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Vibrational Spectra of Trioxodifluoromolybdates(NH4)2MoO3F2 crystallizes in the space group P212121 with a = 6.361(1); b = 7.488(1), c = 11.103(2) Å and Z = 4. According to a threedimensional X-ray structure analysis (596 reflections, R = 0.066) the polymer MoO3F22--ion consists of planar cis-dioxodifluoro units which are linked into an infinite chain by alternating short (1.880 Å) and long (2.007 Å) Mo—O bonds. The vibrational spectra of (NH4)2MoO3F2 and K2MoO3F2. H2O are discussed.
    Notes: (NH4)2MoO3F2 kristallisiert in der Raumgruppe P212121 mit a = 6,361(1) b = 7,488(1), c = 11,103(2) Å und Z = 4. Nach dem Ergebnis einer dreidimensionalen Röntgenstrukturanalyse (596 Reflexe, R = 0,066) liegen im MoO3F22--Ion planare cis-dioxodifluoro- Gruppen vor, die senkrecht dazu über alternierend kurze (1,880 Å) und lange (2,007 Å) Mo-O-Brückenbindungen zu unendlichen Ketten verknüpft sind. Die Schwingungsspektren von (NH4)2MoO3F2 und K2MoO3F2. H2O wurden registriert und zugeordnet.
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  • 14
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 152-158 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Coordination Chemistry of Zinc Dialkyls. XIV. On Lithium and Zinc 3(N, N-Dialkylamino)propyl CompoundsIt is reported on synthesis and properties of organo lithium compounds of the type [R2NCH2CH2CH2Li]n. The structure is proposed by reason of molecular weight determination and 13C-NMR spectra.In dependence of the molar ratio the lithium dialkylamino propyls and the corresponding Grignard reagents react with zinc chloride forming dimer alkyl zinc chlorides [R2NCH2CH2CH2ZnCl]2 or monomer spiranoide chelate complexes of the formula [R2NCH2CH2CH2]2Zn (R = CH3, C2H5).
    Notes: Es wird über die Synthese und die Eigenschaften von Organolithium-verbindungen des Typs [R2NCH2CH2CH2Li]n berichtet und ein Strukturvorschlag aufgrund von Molmassebestimmungen und 13C-NMR-Spektren unterbreitet.Die Lithium-dialkylaminopropyle sowie die entsprechenden Grignardverbindungen reagieren mit Zinkchlorid je nach Molverhältnis der Reaktionspartner zu dimeren Alkylzinkchloriden [R2NCH2CH2CH2ZnCl]2 bzw. monomeren, teilweise schon bekannten, spiranoiden Innerkomplexen der Formel [R2NCH2CH2CH2]2Zn (R = CH3. C2H5).
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  • 15
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 51 (1938), S. 466-471 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 11 Tab.
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  • 16
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 3 (1994), S. 131-136 
    ISSN: 1057-9257
    Keywords: II-VI compound ; SrS : Ce ; Photoluminescence ; Concentration quenching ; Phosphorescence ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: The luminescence efficiency of SrS: Ce powders in the doping range from 0.01 to 1.0 at.% was investigated by photoluminescence decay studies. The radiative decay time of Ce3+ in SrS was determined to be 27 ns. The onset of concentration quenching at concentrations higher than about 0.7 at.% has been obtained. The photoluminescence spectrum of Ce3+ exhibits two emission bands as a consequence of the ground state splitting. The Huang-Rhys factor of the 5d-4f transition was estimated to be about 6. The inhomogeneous broadening of the emission band of samples with higher doping level has been investigated by site-selective and time-resolved spectroscopy.
    Additional Material: 9 Ill.
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  • 17
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Basidiomyceten Inocybe fastigiata (FR. EX.SCH.) QUÉL. und I. umbrina (BRES.) enthalten beträchtliche Mengen Muscarin. In I. bongardi (WEINM.) QUÉL. konnte keines festgestellt werden. Muscarin ist ebenfalls in Fliegenpilzen mexikanischer Herkunft aufgefunden worden. In den roten Huthäuten der Fliegenpilze ist Muscarin angereichert.
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  • 18
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus frischen Fruchtkörpern von Amanita muscaria (L. ex FR.) HOOKER, wurden Prämuscimol, C5H8O5N2, Smp. 145° (Zers.) und Muscazon, C5H6O4N2, isoliert. Beide Substanzen reagieren mit Ninhydrin gelb. Prämuscimol geht leicht unter Wasser- und CO2-Abspaltung in Muscimol über. Prämuscimol wirkt wie Muscimol stark narkosepotenzierend.
    Additional Material: 1 Tab.
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  • 19
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 48 (1965), S. 910-926 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Isolierung einer Substanz mit stark narkosepotenzierender Wirkung, des Muscimols C4H6O2N2, Smp. 155-156°, aus dem Fliegenpilz (Amanita muscaria (L. ex FR.) HOOKER) beschrieben. Die Substanz hat salzartigen Charakter (Betain). Muscimol ist kein genuiner Inhaltsstoff des Fliegenpilzes, sondern entsteht bei der Aufarbeitung aus einer labilen Vorstufe, die ähnliche pharmakologische Wirkungen aufweist. Der Nachweis dieser Verbindungen in Papierchromatogrammen und in Elektropherogrammen wird beschrieben. Sie sprechen mit Ninhydrin gelb, mit GROTE's Reagens blau an. Als empfindliches Nachweismittel für Indole auf Papierchromatogrammen wird Phenylheptatrienal eingeführt.
    Additional Material: 13 Ill.
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  • 20
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 26 (1992), S. IV 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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