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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 65, Iss. 8 — Aug. 1, 2011
  • pp: 892–900

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)

Miriam Unger, Bianca Harnacke, Isao Noda, and Heinz W. Siesler

Applied Spectroscopy, Vol. 65, Issue 8, pp. 892-900 (2011)


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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.

Citation
Miriam Unger, Bianca Harnacke, Isao Noda, and Heinz W. Siesler, "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)," Appl. Spectrosc. 65, 892-900 (2011)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-65-8-892


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