Spektroskopische Untersuchung einiger α,β-ungesättigter cyclischer Ketone |
| |
| Authors: | Grace Marsh D R Kearns K Schaffner |
| |
| Institution: | 1. Department of Chemistry, University of California, Riverside, California;2. Department of Chemistry, University of California, Riverside, California
Organisch-chemisches Laboratorium der Eidg. Technischen Hochschule, Zürich. |
| |
| Abstract: | The results of the spectroscopic investigation of the steroidal enones 1–6 can be summarized as follows: - 1. Direct absorption and phosphorescence excitation techniques have been used to locate the 3(n,π*) states, and in each case it has been found to be the second triplet state.
- 2. The lowest excited state in each case is assigned as 3(π,π*) state.
- 3. The diffuseness in the phosphorescence emission from the 3(π,π*) states is attributed to a large change in the molecular geometry upon excitation (probably to a non-planar configuration).
- 4. The diffuseness in the S→ Tn,π* absorption is correspondingly attributed to interaction between the 3(n,π*) and 3(π,π*) states. A summary of the energy levels for these compounds is given in Fig. 4.
|
| |
| Keywords: | |
|
|
