Venugopalan, P. ; Bharati Rao, T. ; Venkatesan, K. (1991) Studies in crystal engineering. Photochemical and crystallographic investigations of bromocoumarins and (±)-7-(p-bromobenzylidene)piperitone Journal of Chemical Society, Perkin Transactions 2, 2 (7). pp. 981-987. ISSN 0300-9580
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/1991...
Related URL: http://dx.doi.org/10.1039/P29910000981
Abstract
Photodimerisations of bromo-substituted coumarins 1 and 2 and (±)-7-(bromobenzylidene)piperitone 3 have been investigated in the solid state. 6-Bromocoumarin and 7-bromocoumarin crystals yield syn head-to-head dimers upon irradiation, whereas 3 is photostable. The photobehaviour of these systems is rationalised in terms of their crystal packing. The β steering ability of the bromo group has been examined for crystal engineering and the effect of the topological features of the organic moiety on the molecular packing is emphasised.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 66668 |
| Deposited On: | 27 Oct 2011 04:13 |
| Last Modified: | 27 Oct 2011 04:13 |
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