摘要:
Photochemical transformations of substituted benzothiazolylformazanes were studied by electronic spectroscopy under conditions of steady-state photolysis. The phototransformations were established to be photoreversible cis-trans-isomerization, unlike photoirreversible one of triphenylformazane. Electron-donor and electron-acceptor substituents (except for NO2) in the para-position of the phenyl ring of one of the nitrogen atoms retard thermoisomerization.