Translational isomerism in a [3]catenane and a [3]rotaxane

Organic Letters

Volumn 4, Issue 21, 2002, Pages 3561-3564

  Chiu, Sheng Hsien ^a   Elizarov, Arkadij M ^a   Glink, Peter T ^a   Stoddart, J Fraser ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ANTHRACENE DERIVATIVE; CATENANE; POLYCYCLIC HYDROCARBON; ROTAXANE;

ARTICLE; CHEMISTRY; ISOMERISM; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY;

ANTHRACENES; ISOMERISM; MAGNETIC RESONANCE SPECTROSCOPY; POLYCYCLIC COMPOUNDS; ROTAXANES;

EID: 0037126234     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol026464e     Document Type: Article

References (35)

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30. 2. Additionally, increasing the temperature reduced the signal separation and decreasing the temperature increased it. These observations suggest that the resolution of the signals is related to the rate of interconversion between the prox and dist isomers. At high temperatures or in more-polar solvents, less energy is required to break the hydrogen bonding interactions, both influences which will lower the activation free energy for the shutting process. Thus, the rate of exchange between the two translational isomers is increased and results in poorer resolution of the signals.
31. 3CN.
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