Studies in crystal engineering: crystal packing, topologicalphotodimerization and structure-reactivity correlations influoro-substituted styrylcoumarins

Vishnumurthy, Kodumuru ; Guru Row, Tayur N. ; Venkatesan, Kailasam (1997) Studies in crystal engineering: crystal packing, topologicalphotodimerization and structure-reactivity correlations influoro-substituted styrylcoumarins Journal of Chemical Society, Perkin Transactions 2, 2 (3). pp. 615-620. ISSN 0300-9580

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Official URL: http://pubs.rsc.org/en/content/articlelanding/1997...

Related URL: http://dx.doi.org/10.1039/A604274K

Abstract

In continuation of our studies on the influence of fluoro substitution on the solid state photobehaviour and packing pattern of styrylcoumarins, the results obtained for 4-(3-fluorostyryl)coumarin 1, 4-styryl-6-fluorocoumarin 2 and 4-styryl-7-fluorocoumarin 3 are presented. The configuration of the dimers was established on the basis of crystal packing of 1 and 2 (α-packed). A rationale for the significantly lower dimer yield in the crystal for 2 is proposed. In the observed centrosymmetric arrangement of the reactants the C=O … π (phenyl) contacts seem to provide additional attractive interactions. C-H …O and C-H…F hydrogen bonding seems to provide stability in these structures.

Item Type:Article
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ID Code:66606
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