Homochiral vs. heterochiral preference in chiral self-recognition of cyclic diols
2024 | journal article. A publication with affiliation to the University of Göttingen.
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Homochiral vs. heterochiral preference in chiral self-recognition of cyclic diols
Dupont, J.; Hartwig, B.; Le Barbu-Debus, K.; Lepere, V.; Guillot, R.; Suhm, M. A. & Zehnacker, A. (2024)
Physical Chemistry Chemical Physics,. DOI: https://doi.org/10.1039/D4CP00351A
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Details
- Authors
- Dupont, Jennifer; Hartwig, Beppo; Le Barbu-Debus, Katia; Lepere, Valeria; Guillot, Regis; Suhm, Martin A.; Zehnacker, Anne
- Abstract
- Substitution of the transiently chiral
cis
-1,2-cyclohexanediol (
cis
-CD) by a phenyl results in (
S
,
S
)-(+)-1-phenylcyclohexane-
cis
-1,2-diol (
cis
-PCD) and modifies the hydrogen bond pattern in its dimer. The heterochiral preference observed in
cis
-CD changes for homochiral in
cis
-PCD.
The structure and clustering propensity of a chiral derivative of cis -1,2-cyclohexanediol, namely, 1-phenyl- cis -1,2-cyclohexanediol ( cis -PCD), has been studied under supersonic expansion conditions by combining laser spectroscopy with quantum chemistry calculations. The presence of the phenyl substituent induces conformational locking relative to cis -1,2-cyclohexanediol ( cis -CD), and only one conformer of the bare molecule is observed by both Raman and IR-UV double resonance spectroscopy. The homochiral preference inferred for the dimer formation at low enough temperature is in line with the formation of a conglomerate in the solid state. The change in clustering propensity in cis -PCD relative to trans -1,2-cyclohexanediol ( trans -CD), which shows heterochiral preference, is explained by the presence of the phenyl substituent rather than the effect of cis-trans isomerism. Indeed the transiently chiral cis -CD also forms preferentially heterodimers, whose structure is very close to that of the corresponding trans -CD dimer.
Substitution of the transiently chiral cis -1,2-cyclohexanediol ( cis -CD) by a phenyl results in ( S , S )-(+)-1-phenylcyclohexane- cis -1,2-diol ( cis -PCD) and modifies the hydrogen bond pattern in its dimer. The heterochiral preference observed in cis -CD changes for homochiral in cis -PCD.
The structure and clustering propensity of a chiral derivative of cis -1,2-cyclohexanediol, namely, 1-phenyl- cis -1,2-cyclohexanediol ( cis -PCD), has been studied under supersonic expansion conditions by combining laser spectroscopy with quantum chemistry calculations. The presence of the phenyl substituent induces conformational locking relative to cis -1,2-cyclohexanediol ( cis -CD), and only one conformer of the bare molecule is observed by both Raman and IR-UV double resonance spectroscopy. The homochiral preference inferred for the dimer formation at low enough temperature is in line with the formation of a conglomerate in the solid state. The change in clustering propensity in cis -PCD relative to trans -1,2-cyclohexanediol ( trans -CD), which shows heterochiral preference, is explained by the presence of the phenyl substituent rather than the effect of cis-trans isomerism. Indeed the transiently chiral cis -CD also forms preferentially heterodimers, whose structure is very close to that of the corresponding trans -CD dimer. - Issue Date
- 2024
- Journal
- Physical Chemistry Chemical Physics
- ISSN
- 1463-9076
- eISSN
- 1463-9084
- Language
- English
- Sponsor
- Deutsche Forschungsgemeinschaft https://doi.org/10.13039/501100001659