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  • Organic Chemistry  (2)
  • molecular devices
  • Self-assembly
  • 1985-1989  (2)
  • 1989  (2)
Sammlung
Schlagwörter
  • Organic Chemistry  (2)
  • molecular devices
  • Self-assembly
  • Chemistry  (2)
Verlag/Herausgeber
Erscheinungszeitraum
  • 1985-1989  (2)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 72 (1989), S. 1066-1077 
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The synthesis of nine macrocyclic polyamines 2-10 containing pyridine units is described. These compounds are 22- (9), 24- (2-4,6,8,10), or 26- (5, 7) membered hexaaza (2,3,9,10) or octaaza (4-7) macrocycles in which one to four pyridine units are incorporated. Compounds 3,4,9, and 10 are homoditopic ligands, whereas 2 and 5 are heteroditopic and 6-8 multitopic receptors. Compounds 2-10 are potential ligands for metal cations as well as, in their protonated forms, for anions. Protonated macrocycles 2-10 are also potential catalysts for the hydrolysis of nucleotides and polyphosphates.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 72 (1989), S. 1078-1083 
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Binding of chloride anion by protonated polyamines was investigated by 35Cl—NMR spectroscopy. The presence of protonated macro(poly)cyclic polyamines caused downfield shifts and significant line broadening of the 53Cl—NMR signals. 35Cl—NMR spectroscopy was used for complex-formation stoichiometry determination and revealed the formation of a binuclear chloride complex with the fully protonated ditopic hexaazamacrocyclic receptor 6. 35Cl—NMR spectroscopy was also applied in competition experiments between Cl— and SO42- and demonstrated that the fully protonated macrocyclic hexaamine 4 forms a strong complex with SO4-2 with 1:1 stoichiometry.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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