Affiliation:
1. Department of Chemistry, University of California, One Shields Avenue, Davis, CA 95616, USA.
Abstract
Tin Two-Step
Doubly and triply bonded carbon compounds have a well-studied tendency to link up with one another and form rings. The rates of these reactions and their relative susceptibilities to acceleration by heat versus light are encapsulated in the decades-old Woodward-Hoffmann rules. More recently, alkene and alkyne analogs have been prepared with heavier elements such as silicon and tin substituted for carbon.
Peng
et al.
(p.
1668
; see the Perspective by
Sita
) have now discovered that two distannynes (compounds with triply bonded tins) react readily with ethylene to form cycloadducts, with tin-carbon σ bonds taking the place of C-C and Sn-Sn π bonds. These products, characterized spectroscopically and crystallographically, are only loosely bound at room temperature, easily reverting to their multiply bonded precursors on gentle heating.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
182 articles.
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