Exploring dynamics and stereochemistry in mechanically-interlocked compounds

Collection of Czechoslovak Chemical Communications

Volumn 70, Issue 10, 2005, Pages 1493-1576

  Vignon, Scott A ^a   Stoddart, J Fraser ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Catenanes; Donor acceptor; Dynamic stereochemistry; Macrocycles; Molecular machines; NMR dynamics; Pretzelanes; Rotaxanes; Self complexing; Tetrathiafulvalenes

Indexed keywords

EID: 30344457892     PISSN: 00100765     EISSN: None     Source Type: Journal    
DOI: 10.1135/cccc20051493     Document Type: Review

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130. Technically there are four possible isomers, of which three are chemically distinct, namely cis-cis, cis-trans and trans-trans. However, only four signals, instead of the possible eight are observed, indicating that the TTF units are too far apart to influence the magnetic environment of each other and the conformational changes induced by the isomerism only affect the local protons.
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139. Although they will not be discussed here, zwitterionic rotaxanes and catenanes represent another interesting alternative to systems that possess a net charge.
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