ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 36, Number 2
JKCSEZ 36(2)
April 20, 1992 

Near-IR spectra for νa + Amide Ⅱ combination band of thioamides, and very dilute thioamide-DMSO solution in CCl4 were recorded in the temperature range of 5℃ to 55℃. This combination band was resolved by the computer program into two Lorentzian-Gaussian product function which have been identified with monomeric thioamide and thioamide-DMSO 1 : 1 complex. Equilibrium constants and thermodynamic parameters for the thioamide-DMSO hydrogen bonding were elucidated by the analysis of conce ntration and temperature dependent spectra. The hydrogen bonding strength between thioacetamide (TA) and DMSO in CCl4 is stronger than that between thiopropionamide (TPA) and DMSO in CCl4. The ΔH˚ for the TA-DMSO and TPA-DMSO 1 : 1 complex in CCl4 were -15.3 kJ·mol^-1 and -14.2 kj·mol^-1, respectively.