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Chelation of Na+ cations in nonaqueous solvents. Structural requirements and methodological considerations (1983)

Chalais, Stéphane ; Delville, Alfred ; Detellier, Christian ; [et al.]

Springer

Journal of solution chemistry 12 (1983), S. 33-40

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ISSN: 1572-8927

Keywords: Polyamines ; sodium-23 NMR ; nonaqueous solvents ; preferential solvation ; chelate effect

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract Intrinsic formation constants for complexes of Na+ ions with a series of polyamines have been determined from23Na NMR measurements in binary mixtures of tetrahydrofuran (THF) and amines. The results show in a totally unambiguous manner a regular decrease in the magnitude of the chelate effect with the number of atoms intervening between the nitrogen ligators. The key assumption, tetracoordination of the cation, is critically examined, and experimental evidence is adduced in its support.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00650710

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[{Ti(μ-CH3)5(μ-CH2)}{(tmeda)Li}3] · THF: eine Titanverbindung mit stark fluktuierendem VerhaltenDiese Arbeit wurde vom kanadischen Natural Sciences and Engineering Research Council unterstützt. (1995)

Berno, Pietro ; Jenkins, Hilary ; Gambarotta, Sandro ; [et al.]

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 107 (1995), S. 2457-2458

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ISSN: 0044-8249

Keywords: Komplexe mit Kohlenstoffliganden ; Titanverbindungen ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000