An infrared spectroscopic study on the influence of water on alcohols

Autor: E. Scheiber, Viktor Gutmann, C. Kuttenberg
Rok vydání: 1995
Předmět:
Zdroj: Monatshefte f�r Chemie Chemical Monthly. 126:889-895
ISSN: 1434-4475
0026-9247
DOI: 10.1007/bf00811007
Popis: The influence of the water content on absorption bands in FTIR spectra of monohydric alcohols was studied and the effects were compared to changes in spectra of absolute solvents at various temperatures. The FTIR spectra were recorded by the ATR technique in order to distinguish the weak bands of the solvents from the intensive water bands more easily. By addition of water to anhydrous alcohols both OH stretching and bending bands increased in intensity and width. Similar changes in spectra of anhydrous alcohols can be obtained by decreasing the temperature. Addition of water to monohydric alcohols causes the lengthening of the intramolecular OH bonds to a smaller extent than the shortening of the intermolecular OH bonds. This contraction of the liquid structure is also reflected in other physical and chemical properties.
Databáze: OpenAIRE