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  • 1985-1989  (3)
  • 1989  (3)
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Material
Years
  • 1985-1989  (3)
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Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Einkristall-Röntgenstrukturanalyse und chemische Strukturen auf Briefmarken (1989)
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 23 (1989), S. 121-129 
    Details
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In den Kapiteln „Kristalle“, „Röntgenbeugung“, „Mathematik“, „Computer“, „Kristall- und Molekülstrukturen“ und „Datenbanken“ begleiten wir den Autor auf einen unterhaltsamen und informativen Spaziergang durch das heute so wichtige Gebiet der Einkristall-Röntgenstruktur-analyse. Dabei erfahren wir nicht nur etwas von der historischen Entwicklung, sondern auch viele wichtige Details aus der Praxis des gewieften Röntgenstrukturanalytikers. Das Besondere dabei: Illustriert werden die Stationen dieses Streifzugs mit deutschen und internationalen Briefmarken aus den vergangenen 50 Jahren.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ciuz.19890230404
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dihalogen(pentafluorphenyl)sulfonium(IV)-hexafluoroarsenat C6F5SX2+AsF6- (X = Cl, Br) und Kristallstruktur von Di(pentafluorphenyl)sulfan (C6F5)2S (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 569 (1989), S. 158-168 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dihalogen(Pentafluorophenyl)sulfonium(IV) Hexafluoroarsenate C6F5SX2+AsF6- (X = Cl, Br) and Crystal Structure of Di(pentafluorophenyl)sulfane (C6F5)2SThe preparation and spectroscopic characterisation of the halogensulfonium salts C6F5SCl2+AsF6- and C6F5SBr2+AsF6- is reported. The new salts are much more stable than their trifluoromethyl derivatives.In addition the crystal structure of (C6F5)2S is reported. Space group P43212, Z = 4, 478 unique observed diffractometer data, Rint. = 0.07, lattice constants: a = 569.0(5) pm, c = 3785.8(22) pm, V = 1225 times; 10-30 m3.
    Notes: Es wird über die Darstellung und spektroskopische Untersuchung der Sulfoniumsalze C6F5SCl2+AsF6- und C6F5SBr2+AsF6- berichtet. Die neuen Salze sind bedeutend stabiler als ihre Trifluormethyl-Homologen.Ergänzend wird die Kristallstruktur von (C6F5)2S mitgeteilt. Raumgruppe P43212, Z = 4, 478 unabhängige Reflexe, Rint. = 0,07, Gitterkonstanten: a = 569,0(5) pm, c = 3785,8(22) pm, V = 1225×10-30 m3.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895690117
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and spectroscopic characterization of dimethylgermanium derivatives of dipeptides, crystal structure of dimethylgermanium glycylglycinate and in vivo effects of dimethylgermanium glycylglycinate against murine leukemia P388 (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 3 (1989), S. 177-182 
    Details
    ISSN: 0268-2605
    Keywords: Organogermanium ; dipeptide ; structure ; toxicity ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dimethylgermanium derivatives of dipeptides, Me2GeAA (H2AA = H2glygly, H2glyala, H2glyval, H2glyleu, H2glymet) have been obtained by the reaction of Me2GeBr2 with H2AA in the presence of triethylamine. The crystal structure of Me2Geglygly has been determined by single-crystal X-ray diffraction. The dipeptide is tridentately coordinated to germanium, which has a distorted trigonal bipyramidal environment. From infrared and Raman data, analogous molecular structures are inferred for the other dimethylgermanium derivatives of dipeptides. 1H NMR measurements show that Me2Geglygly is completely hydrolyzed in aqueous solution to give H2glygly and (Me2Geo)x.In vivo tests with Me2Geglygly showed no toxic or antitumor activity against murine leukemia P388.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590030210
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    Paper (German National Licenses)
    Fulltext
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