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- W2034986324 abstract "The system POCl3–NaAlCl4 was investigated by measuring the conductivity and the Raman and NMR spectra (27Al, 23Na and 31P) as a function of the mol fraction x of NaAlCl4 in POCl3. Additionally, Raman spectra of POCl3 solutions of NaFeCl4, LiAlCl4, LiFeCl4, and KAlCl4 were recorded. In solutions containing Li+ or Na+ ions a liquid to solid (or jelly) phase transition was observed under certain conditions, dependent on salt concentration and temperature. Observed changes in the Raman spectra of the electrolyte solutions in comparison to the pure solvent POCl3 demonstrate the existence of interactions. Clearly, the POCl3 eigenfrequencies and hence the molecules are pertubed. The formation of [M(POCl3)4]+ complexes (M = Li, Na) can be deduced from the Raman measurements. NMR investigations support this conclusion. For assigning of Raman spectra, (Li+, K+) cation and ([FeCl4]−, [SbCl6]−) anion substitutions were employed. Über die Bildung von [Na(POCl3)4]+-Komplexionen. Leitfähigkeits-, Raman- und NMR-Untersuchungen im System Phosphorylchlorid–Natriumtetrachloroaluminat bzw. analoger Verbindungen Leitfähigkeiten, Raman- sowie 27Al-, 23Na- und 31P-NMR-Spektren des Systems POCl3–NaAlCl4 wurden in Abhängigkeit vom Molenbruch x(NaAlCl4) im lösungsmittelreichen Gebiet gemessen. Zusätzlich erfolgte die Registrierung der Raman-Spektren der Lösungen von NaFeCl4, LiAlCl4, LiFeCl4 und KAlCl4 in POCl3. In den Li+- bzw. Na+-Ionen enthaltenden Proben konnte unter bestimmten Bedingungen ein von Temperatur und Salzkonzentration abhängiger Phasenübergang von der flüssigen in die feste Phase beobachtet werden. Deutliche Veränderungen in den Ramanspektren der Elektrolytlösungen im Vergleich zum reinen Lösungsmittel POCl3 belegen die Existenz von intermolekularen Wechselwirkungen, durch die das POCl3-Molekül beeinflußt wird. Die Annahme der Bildung von [M(POCl3)4]+-Solvaten (M = Li, Na) aufgrund der Ramanergebnisse wird durch die Resultate der NMR-Spektroskopie unterstützt." @default.
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- W2034986324 date "1989-01-01" @default.
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- W2034986324 title "On [Na(POCl3)4]+ Complex Ion Formation: Conductivity, Raman, and NMR studies in the system phosphoryl chloride-sodium tetrachloro aluminate and related compounds" @default.
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- W2034986324 doi "https://doi.org/10.1002/zaac.19895730117" @default.
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