Affiliation:
1. School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
Abstract
Catalysis gets all tied up in knots
Over the past decade, chemists have used metal ion templating to prepare a wide variety of knotted molecular strands. Marcos
et al.
now show that one such pentafoil knot can be applied to catalysis. When held taut by zinc ions, the knot can capture a chloride or bromide ion from a halocarbon, thereby unleashing the reactivity of the residual cation for applications such as Lewis acid catalysis. Removing the zinc ions lowers the knot's affinity for the halides, offering a reversible modulation mechanism for the catalysis.
Science
, this issue p.
1555
Funder
European Research Council
European Union's Seventh Framework Program
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
209 articles.
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