Accession Number:

ADA034156

Title:

The Temperature Dependence of Triplet State Reaction Rate and Quantum Yield for an Intramolecular Enone Photocycloaddition

Descriptive Note:

Technical rept. no. 3, 1 May-31 Oct 1975

Corporate Author:

BOSTON UNIV MA DEPT OF CHEMISTRY

Report Date:

1976-12-01

Pagination or Media Count:

8.0

Abstract:

Valence photoisomerization 320-380 nm of endo-tricyclo-deca-4, 8- diene-3-one has been studied as a function of temperature. At 4 - 51 the isomerization quantum yield is independent of temperature. In the same range the lifetime for the triplet state responsible for isomerization decreases. Arrhenius parameters for triplet decay are computed. A mechanism involving formation of a diradical intermediate which partitions to the valence isomers is suggested.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE