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Science 22 December 2000:
Vol. 290. no. 5500, p. 2215
DOI: 10.1126/science.290.5500.2215a
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Editors' Choice: Highlights of the recent literature

Catenanes are interlinked molecular rings. They are usually fully or mostly organic, and sophisticated versions may have future applications in molecular electronics. Gold-based catenanes have been reported, but in those structures the gold atoms were linked with organic bridges; direct gold-gold interactions were not significant. Wiseman et al. have synthesized unusual catenanes that have fully inorganic rings made of alternating gold and sulfur atoms, a ten-membered ring in one case and twelve in another. A large organic ligand is attached to each of the sulfur atoms. Weak gold-gold interactions, both between atoms in the same ring and between atoms in different rings, contribute to stabilization of the catenanes. -- JU

J. Am. Chem. Soc., in press.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)