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Published December 1, 1978 | public
Journal Article

Low-temperature carbon-13 nuclear magnetic resonance spectroscopic investigation of C_4H_7^+. Evidence for an equilibrium involving the nonclassical bicyclobutonium ion and the bisected cyclopropylcarbinyl cation

Abstract

Much experimental and theoretical work has been directed toward elucidating the nature of the cationic intermediate(s) involved in cyclopropylcarbinyl, cyclobutyl, and allylcarbinyl interconversions under so-called "stable-ion" as well as solvolytic condition. Whereas all experimental evidence on C_4H_7^+ indicates that the species is a nonclassical cation, controversy continues regarding the equilibrium geometry of this cation, with some favoring the bicyclobutonium structure la, and others the "bisected" cyclopropylcarbinyl arrangement (1b).

Additional Information

© 1978 American Chemical Society. December 6, 1978. Supported by the National Science Foundation. We thank Professor F. A. L. Anet of the University of California at Los Angeles for the generous use of his facilities to obtain the 63.1-MHz ^(13)C NMR spectra.

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023