Crystalline Complexes of 2,2′-Bis(9-hydroxy-9-fluorenyl)biphenyl Host with Oligofunctional and Conjugate Functional Group Guests

Autor: Vassiliki Theodorou, Konstantinos Skobridis, Ingeborg Csöregh, Edwin Weber, Dimitrios Alivertis, Wilhelm Seichter
Přispěvatelé: Institut für Organische Chemie [Freiberg], Technishe Universität Bergakademie Freiberg (TU Bergakademie Freiberg)
Rok vydání: 2007
Předmět:
Zdroj: Supramolecular Chemistry
Supramolecular Chemistry, Taylor & Francis: STM, Behavioural Science and Public Health Titles, 2007, 19 (6), pp.373-382. ⟨10.1080/10610270600987895⟩
ISSN: 1029-0478
1061-0278
Popis: International audience; Four crystalline inclusion compounds of the 2,2'-bis(9-hydroxy-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.
Databáze: OpenAIRE
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