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

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)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
AD0648440

Entities

People

  • Stig Claesson

Organizations

  • Uppsala University

Tags

DTIC Thesaurus Topics

  • Agreements
  • Benzaldehydes
  • Chemical Reaction Properties
  • Chemical Reactions
  • Electrons
  • Isomerization
  • Kinetics
  • Molecules
  • Nitrogen
  • Photolysis
  • Substrates

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry
  • Quantum Chemistry

Technology Areas

  • Microelectronics