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  • Inorganic Chemistry  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 1392-1399 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, XXXVII. Three-Armed Multidonor Neutral Ligands - Synthesis, Complex Formation, and Cation SelectivityThe long-chain multidonor tripodand molecules 2a-f, 3a-e, 4 and the lipophilic analogue substances 5-7 have been synthesized. Crystalline 1:1 complexes with alkali and alkaline earth metal salts have been isolated. The complex stability constants depend on the ligand topology. The tripodand 2 f with quinoline terminal groups shows the highest constant with Ba2⊕ ions (log Ks = 4; table 1).
    Notes: Die langkettigen, multizähnigen Tripodanden 2a-f, 3a-e, 4 und die lipophilen Analoga 5-7 wurden synthetisiert. Kristalline 1:1-Komplexe mit Alkali- und Erdalkalimetallsalzen wurden isoliert. Die Komplexstabilitätskonstanten hängen von der Ligandtopologie ab. Der Tripodand 2 f mit Chinolin-Endgruppen ergibt mit Barium-Ionen die höchste Konstante (log Ks = 4: Tab 1).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 2757-2764 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ligand Structure and Complexation, XXVII1) Novel Multi-chelating Noncyclic Neutral Ligands and Their One- and Two-nuclei Alkaline Metal Ion ComplexesThe new noncyclic neutral ligands 2-5 of the crown ether type containing many donor atoms included in a long chain have been synthesized. They turn out as efficient complex ligands as to phase transfer of dissolved salts or dissolution of alkali metal salts in organic solvents. The new ligands 3-5 preferentially form two-nuclei alkali metal salt complexes in a ratio of ligand: salt = 1:2. A S-coiled ligand structure has been evaluated for the 5·2 KSCN complex by means of X-ray structure analysis. Single-nuclei KSCN complexes of ligands 3 and 4 were also isolated in a crystalline form, whereas ligand 2 with KSCN exclusively yields a 1:1 complex.
    Notes: Die besonders langkettigen nichtcyclischen Neutralliganden 2-5 vom Kronenethertyp wurden synthetisiert. Sie erweisen sich beim Phasentransfer von gelösten Salzen bzw. Lösen von Salzen in organischen Lösungsmitteln als wirksame Komplexliganden. Die Liganden 3-5 bilden vorzugsweise zweikernige Alkalimetallsalz-Komplexe (Ligand: Salz = 1:2). Für den 5·2KSCN-Komplex ist eine S-förmige Ligandstruktur bewiesen. Von 3 und 4 konnten auch einkernige KSCN-Komplexe kristallin isoliert werden; 2 lieferte mit KSCN nur einen 1:1-Komplex.
    Additional Material: 2 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 112 (1979), S. 3034-3036 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ligand Structure and Complexation, XI VIII. Alkali Metal Salt and Urea Complexes of Oligomethylene DiethersCrystalline complexes with sodium perchlorate have been obtained of 6a-d, g, 7a, and also of 8-methoxyquinoline (8) (table 2). 1:1 Complexes with urea have been isolated with 6f, g.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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