Repozytorium
Wyszukaj
Kolekcje
Inne
Near-infrared spectroscopic study of hydrogen bonding in chiral and racemic octan-2-ol.
Autorzy
Rok wydania
2003
Czasopismo
Journal of Physical Chemistry A
Numer woluminu
107
Strony
1941-1944
DOI
10.1021/jp0270102
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The effect of temperature on self-association of (R)-(−)-octan-2-ol, (S)-(+)-octan-2-ol, and the racemic mixture in the pure liquid phase has been studied by two-dimensional (2D) Fourier transform near-infrared (FT-NIR) correlation spectroscopy. Both the conventional FT-NIR and 2D correlation spectra of pure enantiomers and the racemic mixture are identical to each other and do not reveal the chiral discrimination effect. The similarity of temperature relationships of population of the free OH groups for the optically active and racemic samples confirms the above conclusion. Of particular note is that the asynchronous spectra of all studied samples develop the peaks due to the free terminal OH groups in the open chain associates. This observation reveals a remarkable population of the linear species. The comparison of present results with previous studies on other isomers of octanol indicates that the degree of self-association decreases upon branching in the order octan-1-ol > octan-2-ol > octan-3-ol.
Słowa kluczowe
Alcohols, Mixtures, Molecular structure, Monomers, Noncovalent interactions
Adres publiczny
https://doi.org/10.1021/jp0270102
Strona internetowa wydawcy
Podobne publikacje
The complexes between CH3OH and CF4. Infrared matrix isolation and theoretical studies.
Mielke Zofia, Coussan Stéphane, Mierzwicki Krzysztof, Roubin P., Sałdyka Magdalena
Effect of temperature and concentration on the structure of N-methylacetamide-water complexes: near-infrared spectroscopic study.
Czarnecki Mirosław A., Haufa Krzysztof
Effect of temperature and concentration on self-association of octan-3-ol studied by vibrational spectroscopy and dielectric measurements.
Czarnecki Mirosław A., Orzechowski Kazimierz