Abstract
Chirality from the crystal lattice: The achiral diarylethene 1 a crystallizes in a monoclinic chiral space group, that is, two different kinds of crystals, (M)-1 a and (P)-1 a, are obtained. Photoirradiation of (P)-1 a furnished optically pure closed-ring isomer (R,R)-1 b in the single crystal (see scheme). The photochemical cycles can be repeated by alternating UV and visible photoirradiation. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2003/z50417_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Published Version
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