title: Solvent interactions in methanol/N, N-dimethylamide binary systems studied by Fourier transform infrared-attenuated total reflection (FT-IR/ATR) and two-dimensional correlation spectroscopy (2D-COS).
abstract: The interaction of N,N-dimethyl formamide (DMF) and N,N-dimethyl acetamide (DMA) with methanol in solution mixtures was studied using Fourier transform infrared-attenuated total reflection (FT-IR/ATR) spectroscopy. The concentration-dependent FT-IR/ATR spectra of DMF/methanol and DMA/methanol mixtures were recorded in the wavenumber range 4000-650 cm(-1) to investigate wavenumber shifts as a consequence of hydrogen bonding interactions. In combination with two-dimensional correlation spectroscopy (2D-COS), the positional fluctuations observed in the ν(C=O) and ν(O-H) regions of DMF/DMA and methanol, respectively, have been discussed in terms of changing populations of differently hydrogen-bonded and interacting species of the same and different component molecules.
authors.affiliation: School of Science and Technology, Kwansei Gakuin University, Sanda, Japan. miriam.unger@stud.uni-due.de
authors.forename: Miriam
authors.initials: M
authors.lastname: Unger
authors.forename: Bianca
authors.initials: B
authors.lastname: Harnacke
authors.forename: Isao
authors.initials: I
authors.lastname: Noda
authors.forename: Heinz W
authors.initials: HW
authors.lastname: Siesler