Microstructures formation in a seemingly ideal homogeneous mixture of ethanol and methanol: An experimental evidence and two-dimensional correlation spectroscopy approach.
An anomalous solution behavior at the molecular scale was observed for macroscopically homogeneous mixtures of methanol and ethanol. Two-dimensional Raman correlation spectroscopy was used to elucidate the possible existence of microstructures formed in the mixture. The result suggests that separate methanol and ethanol clusters are formed without heterohydrogen bonding between different alcohol species. Supramolecular structures seem to be formed by the interaction of such clusters with each other through cohesion and dispersion forces, but not through direct hydrogen bonding connections.
Mello
Cesar
C
Instituto de Química, Universidade de Franca, Franca, SP, Brazil. camello@unifran.br
Mello
Thomás
T
Sevéri
Eza
E
Coelho
Lucinda
L
Ribeiro
Diórginis
D
Marangoni
Antônio
A
Poppi
Ronei J
RJ
Noda
Isao
I
D000431:Ethanol / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
D000431:Ethanol; D000432:Methanol