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- W1990985118 abstract "Die charakteristischen Gruppenfrequenzen cyclischer Amidine erweisen sich als stark abhängig von Aggregatzustand, Lösungsmittel und Lösungskonzentration, also vom Assoziationsgrad. Für die vier cyclischen Amidine 1–4 werden die IR-Banden (Abbildungen 1–3) der Amidin-Gruppe den Monomeren und Assoziaten zugeordnet und im Hinblick auf die Tautomerie sowie die Struktur der Assoziate diskutiert. Die untersuchten Amidine liegen vollständig in der Amino-, nicht in der Imino-Form vor. Mit Chloroform bilden die Amidine über ihr Ringstickstoffatom Mischassoziate mit CH…︁N-Wasserstoffbrücken. Infrared Spectroscopic Investigations of the Tautomerism and Association of Cyclic Amidines The characteristic group frequencies of cyclic amidines 1–4)are found to depend strongly on the state of aggregation, the solvent and the concentration, that is on the degree of association. The IR-bands (Figures 1–3) of the amidine group for the monomers and associated units of four cyclic amidines are assigned and discussed with regard to tautomerism and the structure of the associated molecules. All amidines investigated exist completely in the amino-rather than in the imino form. With chloroform the amidines form mixed associated units with CH…︁N hydrogen bonds via their nitrogen atom in the ring." @default.
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- W1990985118 date "1977-03-11" @default.
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- W1990985118 title "Infrarotspektroskopische Untersuchungen zur Tautomerie und Assoziation cyclischer Amidine" @default.
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- W1990985118 doi "https://doi.org/10.1002/jlac.197719770202" @default.
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