Magnetic circular dichroism spectra and electronic spectra of benzodiazoles

Abstract

The linear dichroism and magnetic circular dichroism spectra of benzofurazan (BFZ), 2,1,3-benzothiazole (BTD) and 2,1,3-benzoselenadiazole (BSD) have been measured. The circular dichroism spectra of the β-cyclodextrin complexes with BFZ, BTD and BSD are reported. The first absorption bands of BFZ, BTD and BSD are assigned by using the observed spectra and the results of m.o. calculations. Our assignment for the first absorption band is in agreement with previous work.