Optical studies of the 3(n.π*) magnetic sublevels in benzaldehyde

✍ Scribed by M. Koyanagi; R. Zwarich; L. Goodman

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 294 KB
• Volume: 9
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(71)80187-2

✦ Synopsis

Decay measurements

a: 1.68'K on severai of the individua_ vibronic bands of benznldehxde-h6.

3L'@) -s phoq h or escence yield two decays: 23.9 and 53.9 milliseconds. These are assigned from dtxterntion effects to the A' magnetic sublevels. Deuteration at the aldehyde hydrogen nearlv doubles the deca>* times indicating that second order vibmnic spin ort.ir mechanisms mvalring aldehyde modes is the primary source of probability in benzaldehyde 3U -1~11~)+3~nx-). l(n~) -~(oTP) are coniirmed.

SO. The inters_vstem crossing selection rules

Recently we showed that the 3U(n;;=) -SO transition in benzaldehyde surprisingly obtains a large parf of its probabiilty vibronically [?. 21. The purpose of this communication is to measure the transition probabilities from the individual magnetic sublevels and to elucidate the mechanism of energy level population and cascade. Despite maw studies on the 3U(nz*) -S,, transition in carbonyl compounds