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| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 20일 (금요일) 13:00~14:30 |
| Code |
PHYS.P-124 |
| Subject |
IR probing of equilibria between I2 and SCN- in DMSO |
| Authors |
Youngseo Kim, Junho Lee, Sungnam Park*
Department of Chemistry, Korea University, Korea
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| Abstract |
I2 reacts with SCN- producing ISCN and I3- in solutions. In this work, we investigated the equilibrium between I2 and SCN- by using Raman, FTIR, UV-Vis, IR pump probe (IR PP), and 2-dimensional infrared (2DIR) spectroscopy. We demonstrated that thiocyanate induces a disproportional reaction of iodine (2I2 + SCN- → ISCN + I3-) in various solvents such as methylene chloride, ethanol, ethyl acetate, and DMSO. The disproportional reaction of iodine in DMSO is studied by probing the CN stretch vibrations of thiocyanate. The vibrational and orientation relaxation dynamics of ISCN and SCN- are studied by IR PP spectroscopy and the forward and backward reaction rates are determined by 2DIR spectroscopy. The disproportional equilibrium of iodine in DMSO is found to occur on hundred picosecond timescales. |
| E-mail |
youngseo1110@hanmail.net |
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120th General Meeting of the KCS