Remarkable stacking behavior of linear oligosiloxanes featuring arylethynyl terminal groups View Full Text


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Article Info

DATE

2003-01

AUTHORS

Silke I. Nitsche, Edwin Weber, Wilhelm Seichter, Matyas Czugler, Wolfram Palitzsch, Gerhard Roewer

ABSTRACT

New organooligosiloxanes 1–5 (Scheme 1) featuring α ,ω -arylethynyl moieties have been synthesized. Complex ensembles of weak intramolecular interactions lead to the formation of interesting architectures, exhibiting the unusual U-shaped molecular geometry of compounds 1, 2 and 4, which has not been found previously example. Replacement of the methyl groups in 1 by phenyl substituents in the disiloxane 4 gives rise to the formation of hydrophobic monolayers different from the bilayer packing behavior of the analogous compound 1. Incorporation of methoxy substituted arene units in the α ,ω -positions completely abolishes intramolecular interactions as indicated in compound 5, which alsoshows the lowest degree of supramolecular contacts (while all the other packing structures are dominated by π -stacking andC-H···π interactions). More... »

PAGES

45-54

References to SciGraph publications

  • 1996. Polysiloxanes and Polymers Containing Siloxane Groups in SILICON IN POLYMER SYNTHESIS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1023/b:silc.0000047926.22155.f1

    DOI

    http://dx.doi.org/10.1023/b:silc.0000047926.22155.f1

    DIMENSIONS

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