F. Gerson, X. Qin, T. Bally
Aug 10, 1988
Citations
0
Influential Citations
11
Citations
Journal
Helvetica Chimica Acta
Abstract
The hitherto unknown radical cation of cyclobutene (2) has been generated in a CFCl3 matrix by γ rays at 77 K. The coupling constants, as determined from the ESR spectrum of 2+, are 2.80 and 1.11 mT for the four CH2 and the two CH = protons, respectively. Photo-induced ring opening of 2+ yields a radical cation which exhibits the same ESR and ENDOR spectra as those observed upon direct ionization of s-trans-buta-1, 3-diene (s-trans-1). The radical cation s-trans-1+, should, therefore, be the final product of this conversion.