Affiliation:
1. Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA.
Abstract
Fluorine Learns to Share
Though halides typically coordinate to just one carbon center, their transient coordination to a second carbon (forming a positively charged bridge) explains the spatial dynamics of many reactions. However, unlike chlorine, bromine, and iodine—which can all form such halonium ions—fluorine does not appear to engage in carbon-bridging behavior, presumably because of its very high electronegativity.
Struble
et al.
(p.
57
, see the Perspective by
Hennecke
) synthesized a rigid molecule, particularly well-poised to manifest fluoride bridging, and provide evidence for a fluoronium intermediate in a displacement reaction.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
79 articles.
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