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Karamertzanis PG, Anandamanoharan PR, Fernandes P, et al. Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives. J Phys Chem B. 2007;111(19):5326-36doi: 10.1021/jp068530q.
Karamertzanis, P. G., Anandamanoharan, P. R., Fernandes, P., Cains, P. W., Vickers, M., Tocher, D. A., Florence, A. J., & Price, S. L. (2007). Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives. The journal of physical chemistry. B, 111(19), 5326-36. https://doi.org/10.1021/jp068530q
Karamertzanis, Panagiotis G, et al. "Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives." The journal of physical chemistry. B vol. 111,19 (2007): 5326-36. doi: https://doi.org/10.1021/jp068530q
Karamertzanis PG, Anandamanoharan PR, Fernandes P, Cains PW, Vickers M, Tocher DA, Florence AJ, Price SL. Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives. J Phys Chem B. 2007 May 17;111(19):5326-36. doi: 10.1021/jp068530q. Epub 2007 Apr 19. PMID: 17441754.
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J Phys Chem B. 2007 May 17;111(19):5326-36. doi: 10.1021/jp068530q. Epub 2007 Apr 19.

Toward the computational design of diastereomeric resolving agents: an experimental and computational study of 1-phenylethylammonium-2-phenylacetate derivatives.

The journal of physical chemistry. B

Panagiotis G Karamertzanis, Parathy R Anandamanoharan, Phillipe Fernandes, Peter W Cains, Martin Vickers, Derek A Tocher, Alastair J Florence, Sarah L Price

Affiliations

  1. Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.

PMID: 17441754 DOI: 10.1021/jp068530q

Abstract

The crystal structures, including two new polymorphs, of three diastereomerically related salt pairs formed by (R)-1-phenylethylammonium (1) with (S&R)-2-phenylpropanoate (2), (S&R)-2-phenylbutyrate (3), and (S&R)-mandelate (4) ions were characterized by low-temperature single crystal or powder X-ray diffraction. Thermal, solubility, and solution calorimetry measurements were used to determine the relative stabilities of the salt pairs and polymorphs. These were qualitatively predicted by lattice energy calculations combining realistic models for the dominant intermolecular electrostatic interactions and ab initio calculations for the ions' conformational energies due to the distortion of their geometries by the crystal packing forces. Crystal structure prediction studies were also performed for the highly polymorphic diastereomeric salt pair (R)-1-phenylethylammonium-(S&R)-2-phenylbutyrate (1-3) in an attempt to predict the separation efficiency without relying on experimental information. This joint experimental and computational investigation provides a stringent test for the reliability of lattice modeling approaches to explain the origins of chiral resolution via diastereomer formation (Pasteurian resolution). The further developments required for the computational screening of single-enantiomer resolving agents to achieve optimal chiral separation are discussed.

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