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Synlett 2001; 2001(Special Issue): 0941-0944
DOI: 10.1055/s-2001-14628
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Supramolecular Chemistry. Supramolecular Rectangles and Their Guests

Andrew J. Goshe* , B. Bosnich
  • *Department of Chemistry, The University of Chicago, 5735 S. Ellis Ave., Chicago, IL 60637, USA; Fax + 1 (773) 7 02 08 05; E-mail: bos5@midway.uchicago.edu
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Publication History

Publication Date:
31 December 2001 (online)

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Two molecular spacers which cofacially dispose terpyridyl-palladium(II)-acetonitrile units separated by ∼ 7 Å are described. The spacers are polyaromatic molecules, one spacer is fully aromatic whereas the other has two symmetrically disposed reduced aromatic rings. Addition of the linker, 4,4′-dipyridyl, to solutions of these spacer-chelator complexes leads to the rapid and quantitative formation of supramolecular rectangles. It is found that the reduced rectangle forms a 4 : 1 adduct with 9-methylanthracene whereas the oxidized rectangle forms a 5 : 1 adduct with 9-methylanthracene. The possible reasons for this high level of agglomeration and the difference in adduct formation for the two systems are discussed.

supramolecular chemistry - molecular recognition - palladium - π-π interaction - host-guest chemistry