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  • 1960-1964  (7)
  • Chemistry  (7)
  • 33
  • 1
    Electronic Resource
    Electronic Resource
    Über Aromatenkomplexe von Metallen, XXXIII. IR-spektroskopische Untersuchungen der v-CO-Banden an Metallcarbonylkomplexen mit zentrisch-π-gebundenen organischen Ringsystemen (1960)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 93 (1960), S. 165-175 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die systematische Untersuchung der ν-CO-Banden an Derivaten des C6H6Cr(CO)3 und C5H5Mn(CO)3 hinsichtlich Zahl und Lage der Absorptionen führt, vor allem in Verbindung mit den Dipolmomenten, zu Einblicken in die Bindungsverhältnisse der Komplexe. Das verschieden tiefe Eingreifen des Ring-π-Elektronensextetts in die Metall-Orbitals, die Polarität der Verbindungen sowie der Metall… C- und C…O-Bindungsgrad stehen in Zusammenhang mit diesen Größen. Selbst funktionelle Gruppen am koordinativ gebundenen Fünf- und Sechsring beeinflussen noch die ν-CO-Frequenz auf charakteristische Weise, so daß eine elektronische Wechselwirkung zwischen dem Ringsubstituenten und den CO-Gruppen über das Zentralatom hinweg anzunehmen ist. Eine Verteilung der negativen Formalladung des Metallatoms auf die Liganden und eine damit zusammenhängende Vorstellung von dem Zustandekommen des Dipolmoments werden erörtert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19600930127
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ein Cyclohexadienyl-eisen-tricarbonyl-Kation (1960)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 72 (1960), S. 919-919 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19600722313
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Crosslinked polyesters from allyl glycidyl ether and maleic anhydridePresented in part at the Gordon Research Conference, Meriden, New Hampshire, July 1961. (1963)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 7 (1963), S. 1451-1469 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Allyl glycidyl ether and maleic anhydride, mixed in equimolar quantities, cure together readily in the presence of air, peroxide, and/or Lewis acids. Outstanding properties of the castings formed are hardness (Barcol 50-60 at 25°C., 30 at 150°C.), clarity and heat distortion temperature (165-168°C.). Color is yellow to amber, and strength properties are adequate. Water resistance is fair. The mixture is too thin for convenient use in laminating, but it can be bodied by heating (1 hr., 110°C.), giving a syrup of 50 cpoise. In glass cloth laminates, through-cure appears to be inhibited by the glass. The addition of styrene overcomes this effect. Small amounts are best (5-20%), since large quantities impair elevated temperature strength. Unusually good strength is attained even at 500°F., but resistance to aging at 500°F. is poor.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1963.070070423
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  • 4
    Electronic Resource
    Electronic Resource
    Die Triterpenalkohole der Birkenblätter, II (1961)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 644 (1961), S. 146-162 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das aus Birkenblätten isolierte Betula-Folientriol C30H52O3 ist 3α. 12β. 20β-Trihydroxy-dammaren-(24). Das in kleineren Konzentrationen und erst im Laufe des Sommers in den Blättern auftretende Betulla-Folienteraol C30H52O4 ist wahrscheinlich 3α. 12β. 17(α?).20β-Tetrahydroxy-dammaren-(24). Die Versuche zur Sicherung der Struktur und Konfiguration der beiden Triterpenalkohole werden angegeben.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19616440119
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  • 5
    Electronic Resource
    Electronic Resource
    Die Triterpene der Blätter der Schwarzerle (1961)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 644 (1961), S. 162-171 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus den Blättern der Schwarzerle (Alnus glutinosa) wurde ein bisher unbekanntes Triterpendihydroxyketon C30H50O3 isoliert und als 12β.20β-Dihydroxy-3-oxo-dammaren-(25) gekennzeichnet. Es enthält also das tetracyclische Dammaran-Ringgerüst wie die Triterpenalkohole aus Birkenblättern und nicht das pentacyclische Gerüst der in der Rinde der Schwarzerle vorkommenden Triterpenketone Glutinon C30H48O und Taraxeron C30H48O. In den Erlenblättern finden sich außerdem ein Triterpenalkohol C30H50O und ein Keton C30H48O; diese wurden als 3β-Hydroxy-glutinen-(5) bzw. als 3-Oxo-δ13(18)-oleanen (δ-Amyrenon) erkannt. Als Naturstoffe waren auch diese beiden pentacyclischen Terpene bisher nicht bekannt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.19616440120
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  • 6
    Electronic Resource
    Electronic Resource
    Polyesters from expoxides and anhydrides (1960)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 44 (1960), S. 155-172 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The reaction of monoanhydrides and terminal epoxides to give linear polyesters is 98-99% specific in the presence of tertiary amines. Products with molecular weights up to 18,400 have been obtained; the only termination reaction detected (within the limits of analytical accuracy) has been due to hydroxyl-containing impurities in the reagents. With most epoxides the products are mixtures of stereoisomers which soften below 100°. Ethylene oxide, however, gives highly crystalline products melting at 110° to 163-165°, depending on the anhydride. Cyclohexene oxide also gives products softening higher than 110°. The use of functional epoxides gives polyesters with side-chains modifying their physical and chemical properties. Up to 30 mole-% of maleic anhydride has been incorporated, giving styrene-compatible structural polyesters. Within limits, the rate, molecular weight, and product composition are independent of the monomer concentrations. The degree of specificity drops to ca. 80% with cyclohexene oxides and to ca. 60% with alkyl epoxy stearates.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1960.1204414314
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  • 7
    Electronic Resource
    Electronic Resource
    4-(Dimethylallyl)tryptophan, a Precursor of Clavine Alkaloids (1962)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 1 (1962), S. 399-400 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196203992
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