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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 512-517 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, LIII1).  -  Non-cyclic Neutral Ligands with Two Central Pyridine Units and Rigid Donor End GroupsThe synthesis and properties of the title compounds, which are rendered comparatively rigid by the two pyridine rings, are described. Their complexation with alkali, alkaline earth and transition metal ions is examined. The crystalline complexes often contain stoichiometric amounts of water. 1H-NMR spectra show that helical ligand conformations are present in solutions of the complexes.  -  Neutral molecules like urea and thiourea are also shown to form stoichiometric complexes with the new ligands.
    Notes: Synthese und Eigenschaften der durch zwei Pyridinringe versteiften Titelverbindungen werden beschrieben. Ihre Komplexierung mit Alkali-, Erdalkali- und übergangsmetallionen wird unter-sucht. Die kristallinen Komplexe enthalten häufig stöchiometrische Mengen Wasser. Die 1H-NMR-Spektren zeigen, daß in Lösungen der Komplexe helikal gewundene Ligandkonformationen vorliegen.  -  Mit Neutralmolekülen wie Harnstoff und Thioharnstoff wurden gleichfalls stöchiometrische Komplexe isoliert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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