We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Einelektronen-Redox-Reaktionen von Octamethyl[4]radialen: Nachweis der Alternanz geradzahliger Radialene.
- Authors
Bock, Hans; Rohn, Günther
- Abstract
One-Electron Redox Reactions of Octamethyl[4]radialene: Proof of the Alternancy of Even-Membered Radialenes The photoelectron spectrum of octamethyl[4]radialene ( = tetrakis(dimethylmethylidene)cyclobutane) yields the rather low first vertical ionization of only 7.30 eV and, therefore, the molecule can be oxidized by AlCl3/CH2Cl2 to its radical cation. The ESR and ENDOR signal patterns recorded are almost identical with those of the radical anion, generated in a [2.2.2]cryptand THF solution by reduction at a potassium metal mirror. Their near congruency is in accord with the alternant π molecular properties of even-membered radialenes as predicted by HMO theory, and larger changes of the D2d structure of C8(CH3)8 during the redox reactions are presumably hindered by the steric overcrowding in persubstituted [4]radialenes.
- Publication
Helvetica Chimica Acta, 1991, Vol 74, Issue 6, p1221
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.19910740609