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Photoelectron-Spectroscopic Evidence for the Orbital Sequence in Fulvene and 3, 4-Dimethylene-cyclobutene |
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| Authors: | E Heilbronner R Gleiter H Hopf V Hornung A De Meijere |
| Abstract: | The photoelectron spectra of fulvene (II) and of 3,4-dimethylene-cyclobutene (III) have been recorded. The PE. bands are correlated, in order of increasing ionisation potentials, with the following orbitals: II: 1 a 2(π), 2 b 1(π), 7 b 2(π), 1 b 1(π); III: 2 b 1(ω), 1 a 2(π), 10 a 1(ω), 8 b 2(ω), 1 b 1(π). This assignment is based on a semi-quantitative perturbation MO-model and on the SCF-LCAO-MO calculations reported by Praud, Millie & Berthier 5] for benzene, II and III. |
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