Constitutionally asymmetric and chiral [2]pseudorotaxanes

Journal of the American Chemical Society

Volumn 120, Issue 5, 1998, Pages 920-931

  Asakawa, Masumi ^a   Ashton, Peter R ^a   Hayes, Wayne ^a   Janssen, Henk M ^b   Meijer, E W ^b   Menzer, Stephan ^c   Pasini, Dario ^a   Stoddart, J Fraser ^a   White, Andrew J P ^c   Williams, David J ^c  

^a UNIVERSITY OF BIRMINGHAM   (United Kingdom)

^b EINDHOVEN UNIVERSITY OF TECHNOLOGY   (Netherlands)

^c IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CATION; HYDROQUINONE; POLYETHER; TAXANE DERIVATIVE;

ARTICLE; CHIRALITY; CIRCULAR DICHROISM; PROTON NUCLEAR MAGNETIC RESONANCE; ULTRAVIOLET SPECTROSCOPY; X RAY CRYSTALLOGRAPHY;

EID: 0032506944     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja970018i     Document Type: Article

References (52)

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52. These are low g values compared to g values of other types of electronic transitions. For example, n-π, π-π, π-πcouplet, πx-πx, πx-πy, and n-ótransitions have typical g values of 30- 10-3, 8- 10-3, 3- 10-3, 2- 10-3, and 1- 10-3, respectively. See ref 34b, p 1014. CD activity in charge-transfer transitions has also been observed in [2,2]- metacyclophanes. See: Knops, P.; Windscherf, P.-M.; Vögtle, F.; Roloff, A.; Jansen, M.; Nieger, M.; Niecke, E.; Okamoto, Y. Chem. Ber. 1991, 124, 1585-1590.