| Autor: |
S. Spampinato, Ignazio L. Fragalà, Giovanni Bruno, G. Centineo |
| Rok vydání: |
1978 |
| Předmět: |
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| Zdroj: |
Chemischer Informationsdienst. 9 |
| ISSN: |
0009-2975 |
| DOI: |
10.1002/chin.197831040 |
| Popis: |
The photoelectron spectra of benzophenone, acetophenone and their alkyl derivatives were measured. The photoelectron bands are discussed in the light of the influence of the molecular geometry. In benzophenone the π conjugation between the two benzene rings is the main factor determining the splitting of the original benzene orbitals. The deviation from the coplanarity between the two benzene rings accounts well for the observed effects. In the ortho -alkyl substituted compounds the strong steric inhibition of resonance due to the substituents allows their spectra to be discussed in terms of overlapping ionization of the two isolated benzene fragments. In the acetophenone derivatives the effects of alkyl substitution split the low energy overlapping band system of the acetophenone. Ionization energy values estimated through Heilbronner's relationship agree with the experimental findings for the n and π ( a 2 ) ionization. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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