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  • 1
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge University Press
    Call number: PIK D 025-03-0231
    Type of Medium: Monograph available for loan
    Pages: 261 p.
    Edition: 5. pr.
    ISBN: 0521598494
    Series Statement: Cambridge studies in international relations 55
    Branch Library: PIK Library
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  • 2
    ISSN: 1434-1948
    Keywords: 2,2′-Bipyridines ; Chelate complexes ; Hydrogen bonding ; π-π stacking ; Crystal structure ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new synthetic route for the synthesis of 5,5′-diamino-2,2-bipyridine (5) based on the coupling of 2-chloro-5-aminopyridine in the presence of NiCl2 × 6 H2O/PPh3/Zn in dimethylformamide is described. The reactions of the potentially ambidentate ligand 5 with salts of the transition metals Mn, Fe, Ni, Cu, Zn, Ag, and Cd gave a variety of 13 metal-ligand complexes depending on the anion, the crystallization conditions and the metal-to-ligand ratio. The complexes obtained were characterized by thermal analyses, NMR including 113Cd-NMR, IR, and for the iron complex 57Fe-Mößbauer spectroscopy. The structure of eight of the compounds was elucidated by X-ray crystallography. All of these metal complexes show a bipyridine-metal coordination. The amino functionality was never involved in metal coordination. The intermolecular arrangement is dictated by hydrogen bonding from the amino functionality and by π-π stacking of the bipyridine rings.Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2005/1999/99078_s.pdf or from the author.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0044-2313
    Keywords: Dianionic Polyolato Ligands ; Deprotonated Anhydroerythritol ; Beryllium ; Lead ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polyol Metal Complexes. XIII. Na2[Be(C4H6O3)2] · 5H2O and Na2[Pb(C4H6O3)2] · 3H2O - Two Homoleptic Bis Polyolato Metallates with Beryllium and with LeadNa2[Be(C4H6O3)2] · 5H2O (1) and Na2[Pb(C4H6O3)2] · 3H2O (2) crystallize from concentrated, alkaline aqueous solutions. The polyol anhydroerythritol is deprotonated twice in the mononuclear, homoleptic complex anions. The preference of beryllium for the binding of cis-furanoid diols is shown. In 2, a stereochemically active lone pair at the central atom is the reason for the construction of low dimensional aggregates from three plumbate and three sodium ions.
    Notes: Na2[Be(C4H6O3)2] · 5H2O (1) und Na2[Pb(C4H6O3)2] · 3H2O (2) kristallisieren aus konzentrierten wäßrig-alkalischen Lösungen. In den einkernigen, homoleptischen Komplexanionen liegt das Polyol Anhydroerythrit als doppelt deprotonierter Chelatligand vor. Die Präferenz des Berylliums für cis-furanoide Diole wird gezeigt. In 2 führt ein stereochemisch aktives Elektronenpaar am Zentralmetall zum Aufbau eines niederdimensionalen Aggregats aus drei Plumbat- und drei Natrium-Ionen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1496-1498 
    ISSN: 0044-2313
    Keywords: Guanosine ; Ribofuranoside Ligands ; Antimonate(III) ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Polyol Metal Complexes. 27. Bis-Diolato Antimonates(III) with Guanosine as the DiolThe complex anions of K3[SbIII(Guo1,2′,3′H-3)2] · 10 H2O (1) and [Co(NH3)6][SbIII(Guo1,2′,3′H-3)2] · 9 H2O (2) are four-coordinate homoleptic bis(diolato)antimonate(III) species. The guanosine trianions act as carbohydrate ligands through their cis-furanoidic ribosyl moiety, thus forming no nucleobase-metal bonds.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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