Chiral segregation, an unusual racemic phase, and a residual entropy for a lattice system of model chiral molecules

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F10%3A00175058" target="_blank" >RIV/68407700:21110/10:00175058 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Chiral segregation, an unusual racemic phase, and a residual entropy for a lattice system of model chiral molecules
Original language description
Low temperature phases of a 2D model molecular system that contains an equimolar mixture of a chiral molecule and its mirror image were studied. The molecules lie on a thin film in the close-packed regime, occupying the sites of a honeycomb lattice, andneither enantiomer is externally favored. In one range of interactions, chiral segregation into two ordered homochiral phases containing a single enantiomer occurs. An ordered racemic phase occurs in which one sublattice is occupied by one enantiomer andthe other sublattice is occupied by the other enantiomer. When second-closest group interactions are relaxed, the ground states of the homochiral and the associated racemic phase have the same energy; in fact, the total number of ground state configurations becomes infinite and yields a residual entropy. This residual entropy is calculated exactly.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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