期刊
JOURNAL OF CHEMICAL PHYSICS
卷 130, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3054301
关键词
coupled cluster calculations; density functional theory; liquid theory; optical rotation; organic compounds; vibrational states
资金
- Swedish Foundation for Strategic Research
- Villum Kann Rasmussen Foundation (Denmark)
- National Science Foundation [CHE-0715185]
- Oak Ridge National Laboratory
- Division of Basic Energy Science
- Office of Science, U.S.
The specific optical rotation of (S)-fluoro-oxirane in gas phase and solution is predicted using time-dependent density functional theory (B3LYP functional) and coupled cluster linear response theory. Upon vibrational averaging, the coupled cluster singles and doubles model predicts the gas phase specific optical rotation to be 8.1 degrees (dm g/cm(3))(-1) at 355 nm at room temperature. This is an order of magnitude smaller than the B3LYP result of 68.4 degrees (dm g/cm(3))(-1). The main source of this discrepancy is the electronic contribution at the equilibrium geometry. The effects of cyclohexane and acetonitrile solvents are calculated for both the electronic and vibrational contributions with the B3LYP functional. The specific optical rotation is estimated to change significantly depending on the polarity of the solvent, increasing in cyclohexane and decreasing in acetonitrile.
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