The five-stage self-assembly of a branched heptacatenane

Angewandte Chemie (International Edition in English)

Volumn 36, Issue 19, 1997, Pages 2070-2072

  Amabilino, David B ^a   Ashton, Peter R ^a   Boyd, Sue E ^a   Lee, Ju Young ^a   Menzer, Stephan ^b   Stoddart, J Fraser ^a,c   Williams, David J ^b  

^a UNIVERSITY OF BIRMINGHAM   (United Kingdom)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

^c UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Catenaries; Donor acceptor systems; Self assembly; Supramolecular chemistry; Template synthesis

Indexed keywords

EID: 0030771020     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199720701     Document Type: Article

References (24)

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10. A multistep self-assembly procedure has been used to construct [4]- and [5]catenanes: D. B. Amabilino, P. R. Ashton, A. S. Reder, N. Spencer, J. F. Stoddart, Angew. Chem. 1994, 106, 450-453; Angew. Chem. Int. Ed. Engl. 1994, 33, 433-437.
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16. 6 - or indeed, other higher order catenanes.
17. 1 is a consequence of the extensive solvation, the large number of very weak reflections, and serious and unresolved inconsistencies in the high-angle data (very asymmetric intensity distributions and negative overall U values from Wilson plots), discrepancies that necessitated weighting of the data before a solution could even be obtained and the abandoning of the data in the range 40°<0<52° for the refinements. Crystallographic data (excluding structure factors) for the structure reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication no. CCDC-100468. Copies of the data can be obtained free of charge on application to The Director, CCDC, 12 Union Road, Cambridge CB21EZ, UK (fax: int. code + (1223)336-033; e-mail: deposit@chemcrys.cam.ac.uk).
18. In view of the limited accuracy of the data and the presence of disorder within parts of the polyether linkages, we have not carried out a detailed analysis of the possible intercomponent [CH ⋯O] hydrogen bonding, although undoubtedly these interactions will have additional stabilizing effects on the overall molecular geometry.
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