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Pedersen TB, Kongsted J, Crawford TD, et al. On the importance of vibrational contributions to small-angle optical rotation: Fluoro-oxirane in gas phase and solution. J Chem Phys. 2009;130(3):034310doi: 10.1063/1.3054301.
Pedersen, T. B., Kongsted, J., Crawford, T. D., & Ruud, K. (2009). On the importance of vibrational contributions to small-angle optical rotation: Fluoro-oxirane in gas phase and solution. The Journal of chemical physics, 130(3), 034310. https://doi.org/10.1063/1.3054301
Pedersen, Thomas Bondo, et al. "On the importance of vibrational contributions to small-angle optical rotation: Fluoro-oxirane in gas phase and solution." The Journal of chemical physics vol. 130,3 (2009): 034310. doi: https://doi.org/10.1063/1.3054301
Pedersen TB, Kongsted J, Crawford TD, Ruud K. On the importance of vibrational contributions to small-angle optical rotation: Fluoro-oxirane in gas phase and solution. J Chem Phys. 2009 Jan 21;130(3):034310. doi: 10.1063/1.3054301. PMID: 19173524.
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J Chem Phys. 2009 Jan 21;130(3):034310. doi: 10.1063/1.3054301.

On the importance of vibrational contributions to small-angle optical rotation: Fluoro-oxirane in gas phase and solution.

The Journal of chemical physics

Thomas Bondo Pedersen, Jacob Kongsted, T Daniel Crawford, Kenneth Ruud

Affiliations

  1. Department of Theoretical Chemistry, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden. [email protected]

PMID: 19173524 DOI: 10.1063/1.3054301

Abstract

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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