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Crystalline complexes of 2,2 '-bis(9-hydroxy-9-fluorenyl) biphenyl host with oligofunctional and conjugate functional group guests
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2007 (English)In: Supramolecular chemistry (Print), ISSN 1061-0278, Vol. 19, no 6, 373-382 p.Article in journal (Refereed) Published
Abstract [en]

Four crystalline inclusion compounds of the 2,20-bis( 9hydroxy- 9- fluorenyl) biphenyl host 1, containing diethylene glycol ( 1: 1) ( 1a), bis( 2- aminoethyl) amine ( 1: 1) ( 1b), methacrylic acid ( 1: 1) ( 1c) and 2- cyclopenten- 1- one ( 1: 2) ( 1d), have been studied by X- ray diffraction analysis from single crystals. Departure from the expectation, the multifunctional and conjugate functional guest molecules, potentially being able to offer multiple H donor-/ acceptorships or other modes of polar interaction due to the conjugation, do not result in the formation of infinitely connected networks in the crystal structures. Instead of this, discrete 2: 2 host - guest aggregates ( 1a, 1b), guest dimers ( 1c) and rather conventional host - guest units ( 1d) are found. Hence, inherent shielding effects of the host molecule owing to the fluorenyl moieties and the presence of a strong intramolecular hydrogen bond, impeding multiple intermolecular association, are not overcome by the merits of the guest molecules, showing that the host compound 1 is superior by structural constancy in its crystalline inclusions.

Place, publisher, year, edition, pages
2007. Vol. 19, no 6, 373-382 p.
Keyword [en]
inclusion host, organic guests, crystalline inclusion compounds, supramolecular interactions, X-ray crystal structure determinations
National Category
Chemical Sciences
URN: urn:nbn:se:su:diva-55763DOI: 10.1080/10610270600987895ISI: 000250011400003OAI: diva2:407124
authorCount :6Available from: 2011-03-29 Created: 2011-03-28 Last updated: 2011-03-29Bibliographically approved

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