The Thermal Cis-trans Isomerization of Azobenzene, Stilbene, N-benzylideneaniline and Some of Their Derivatives in the Vapour Phase at Elevated Temperatures Studied by Flash PhotolysisUniv., 1983 - 48 pages |
Common terms and phrases
4-aminoazobenzene 4-dimethylamino 4-dimethylamino-4'-nitro 4-nitroazobenzene a-methylstilbene AB-OH absorption spectra activation energy Activation parameters angle of twist aniline AS-values azo compounds azoben azobenzene molecule azobenzenes and azomethines benzene ring calculated Chem cis isomer cis vp cis-trans rate cis-trans reaction cyclohexane dipole electron electron-releasing electron-releasing groups electron-withdrawing elevated temperatures enthalpy ethanol flash photolysis Flash photolysis experiments furnace gas phase gaseous Gibbs free energy heating tube heptane hypsochromic shifts inversional mechanism ISOMERIZATION OF AZOBENZENE Jan-Åke Andersson kinetics kJ mol kJ mol-1 N-benzylideneaniline nitrogen atom NO2-group paper phase at elevated polar preexponential factor push-pull substituted Quantitative vapour phase reaction vessel red-shift refer Roland Pettersson rotational mechanism solution phase solvent Solvent dependence spectrum stilbene molecule substituents substituted azobenzenes suggested Table thermal cis-trans isomerization thermally induced tion trans et 25 trans isomer trans rate trans-cis transition twisted configuration Uppsala Vapour phase absorption vapour phase spectra wavenumber zation zene ΔΑ(λ ΔΕ