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  • 1975-1979  (4)
  • 1965-1969  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Zoomorphology 63 (1968), S. 239-250 
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new amazon Chironomus has been described. It is easily reared in laboratories in shallow containers because the adults swarm and mate near the substrate. At an optimum temperature for the larvae of about 30° C the whole life cycle from egg to adult occurs in 10 to 12 days.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Copolymers from styrene and 1-vinylimidazoles (4a-f), form low spin adducts with iron(II) porphyrins and iron(III) porphyrins, when the content of imidazolyl groups in the polymer is ten mole percent or more. With polymers having a content of imidazolyl groups of less then one mole percent, only high spin adducts are observed. With terpolymers, in which the porphyrin is covalently bound to the copolymer the same phenomenon is observed. Only the high spin Fe(II) porphyrin adducts in the solid state adsorb molecular oxygen like cobalt(II) porphyrins under the same conditions. Adsorptions and desorptions of oxygen are much slower in the cases of iron(II) porphyrins than with the cobalt(II) porphyrins. Electronic and ESR spectra as well as susceptibility measurements were used to characterize the reported spin states.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 88 (1976), S. 851-851 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1635-1642 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of SqualeneThe unsaturated hydrocarbon squalene, C30H50, has been crystallized from ether/methanol 2:5 (m.p. - 5°C) and its crystal structure has been analyzed at - 110°C. Squalene crystallizes with two formula units in the space group P21/n in a cell of following dimensions: a = 761.2(3), b = 627.4(3), c = 2853.3(16) pm, ß = 93.56(3)°. The molecule is in a stretched STCES̄TCESTS̄ETSECTS̄**) conformation with C i-symmetry. Deviations from a fully stretched conformation are caused by the methyl substituents. The techniques used for the handling of low melting crystals are described in detail.
    Notes: Der ungesättigte Kohlenwasserstoff Squalen (C30H50) wurde aus Ether/Methanol 2:5 bei - 30°C kristallisiert (Schmp. - 5°C) und die Kristallstruktur bei - 110°C bestimmt. Die monokline Elementarzelle [a = 761.2(3), b = 627.4(3), c = 2853.3(16) pm, ß = 93.56(3)°] enthält zwei Formeleinheiten und gehört zur Raumgruppe P21/n. Die Konformation des Moleküls ist gestreckt (STCES̄TCESTS̄ETSECTS̄)**) und weist Ci-Symmetrie auf. Die Faltung der Squalenkette wird jeweils durch die Methylgruppe benachbarter Moleküle im Kristallgitter hervorgerufen. Die angewandten Techniken der Kristallisation und der Montage bei niedrigen Temperaturen werden in Einzelheiten beschrieben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 15 (1976), S. 778-778 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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