Display options
Cite
Pedersen TB, Kongsted J, Crawford TD. Gas phase optical rotation calculated from coupled cluster theory with zero-point vibrational corrections from density funcional theory. Chirality. 2009;21:E68-75doi: 10.1002/chir.20778.
Pedersen, T. B., Kongsted, J., & Crawford, T. D. (2009). Gas phase optical rotation calculated from coupled cluster theory with zero-point vibrational corrections from density funcional theory. Chirality, 21E68-75. https://doi.org/10.1002/chir.20778
Pedersen, Thomas Bondo, et al. "Gas phase optical rotation calculated from coupled cluster theory with zero-point vibrational corrections from density funcional theory." Chirality vol. 21 (2009): E68-75. doi: https://doi.org/10.1002/chir.20778
Pedersen TB, Kongsted J, Crawford TD. Gas phase optical rotation calculated from coupled cluster theory with zero-point vibrational corrections from density funcional theory. Chirality. 2009;21:E68-75. doi: 10.1002/chir.20778. PMID: 19743487.
Copy Download .nbib Format: NLM
Share it on

Chirality. 2009;21:E68-75. doi: 10.1002/chir.20778.

Gas phase optical rotation calculated from coupled cluster theory with zero-point vibrational corrections from density funcional theory.

Chirality

Thomas Bondo Pedersen, Jacob Kongsted, T Daniel Crawford

Affiliations

  1. Department of Chemistry, Centre for Theoretical and Computational Chemistry, University of Oslo, Blindern, N-0315 Oslo, Norway. [email protected]

PMID: 19743487 DOI: 10.1002/chir.20778

Abstract

Molecular vibrations can have a significant influence on gas phase specific optical rotations. Mainly due to the large number of nuclear degrees of freedom in most chiral molecules, theoretical predictions of vibrational corrections quickly become prohibitively expensive. Here, we investigate an approach in which the purely electronic contribution is calculated at the coupled cluster singles and doubles level, while the zero-point vibrational correction is computed using the less demanding density functional theory (B3LYP functional). By comparing to experimental gas phase results for seven molecules and two wavelengths, we find that the mixed coupled cluster/B3LYP approach performs significantly better than pure B3LYP predictions. In fact, we find that it is more important to use high-level electron correlation for the electronic contribution than to include zero-point vibrational corrections.

(c) 2009 Wiley-Liss, Inc.

Publication Types