THE STUDY OF BENZIMIDAZOLES .8. THE RELATION BETWEEN THEIR UV AND PHOTOELECTRON-SPECTRA

Citation
Vk. Turchaninov et al., THE STUDY OF BENZIMIDAZOLES .8. THE RELATION BETWEEN THEIR UV AND PHOTOELECTRON-SPECTRA, Russian chemical bulletin, 42(10), 1993, pp. 1683-1689
Citations number
14
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
42
Issue
10
Year of publication
1993
Pages
1683 - 1689
Database
ISI
SICI code
1066-5285(1993)42:10<1683:TSOB.T>2.0.ZU;2-9
Abstract
The nature of the first two long-wave bands in the UV spectra of 2-sub stituted benzimidazoles has been analyzed on the basis of photoelectro n spectra (PES). Three basic types of spectroscopic situations are typ ical of these compounds: 1) a change in the sequence of the occupied M O of the ground state does not influence the order of the excited ener gy levels; 2) when the pi-levels are in the same order, inversion of t he excited states occurs; 3) reversal of the occupied pi-MO of the gro und state causes the inversion of the excited states.