Accession Number:

ADA034158

Title:

Valence Photoisomerization of 1-Ethoxycarbonyl-1H-Azepine: Excited State Energetics and Multiplicity

Descriptive Note:

Technical rept. no. 4, 1 Jul 1974-31 May 1975

Corporate Author:

BOSTON UNIV MA DEPT OF CHEMISTRY

Report Date:

1976-12-01

Pagination or Media Count:

6.0

Abstract:

Photolysis of 1-ethoxycarbonyl-1H-azepine in solution at 325-385 nm gives a valence isomer with a quantum efficiency of 0.013. Valence photoisomerization cannot be driven with triplet photosensitizers nor can it be quenched by a triplet quenchers. The isomerization can be carried out using laser excitation at 458 nm. The azepine does not luminescence, but excited state energies can be estimated from absorption and sensitization data s1 60 kcal mol, T1 55 kcalmol.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE