Accession Number:

AD0648440

Title:

FLASH PHOTOLYSIS STUDIES ON REACTIONS BETWEEN EXCITED MOLECULES AND SELECTED SUBSTRATES. SUBSTITUENT EFFECTS IN THE CIS-TRANS ISOMERIZATION ABOUT THE CARBON-NITROGEN DOUBLE BOND.

Descriptive Note:

Technical rept.,

Corporate Author:

UPPSALA UNIV (SWEDEN) INST OF PHYSICAL CHEMISTRY

Personal Author(s):

Report Date:

1965-01-01

Pagination or Media Count:

18.0

Abstract:

Ethanol solutions of N-benzylideneaniline derivatives were photoisomerized and the kinetics for the thermal relaxation was measured. This thermal reaction follows first-order kinetics and the rate constants correlate with the Hammett sigma constants. The effect of a substituent is considerably stronger when it is attached to the aniline ring than when it occupies the corresponding position on the benzaldehyde ring. This is in agreement with the non-planar model for N-benzylideneaniline, where the pi-electron system of the aniline ring interacts with the lone-pair electrons of the nitrogen atom. Author

Subject Categories:

  • Organic Chemistry
  • Radiation and Nuclear Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE