Synthesis, crystal structure and vibrational properties of N-(8-(3-(3-(tert-butyl)ureido)phenyl)imidazo[1,2-a]pyridin-6-yl)acetamide

Investigation of Amine-Based Ternary Deep Eutectic Solvents for Efficient, Rapid, and Reversible SO2 Absorption

“…Here, a new peak around 1295 cm –1 for ternary DES after absorbing SO 2 is observed, which is ascribed to the asymmetric stretching vibration of SO 2 . Besides, peaks around 3285 and 1681 cm –1 are found for ternary DES, which could be attributed to the −OH group and CO group in EG and AA, respectively. , After SO 2 is saturated, these two peaks are shifted to lower wavenumbers (3265 and 1619 cm –1 ), which might be ascribed to the formation of hydrogen bonding between ternary DES and SO 2 . For EG, with the formation of hydrogen bonding, the force constant of the O–H bond in the −OH group would be decreased .…”