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

Authors
TURCHANINOV VK MOTVIENKO EA LARINA LI SHULUNOVA AM BAIKALOVA LV LOPYREV VA
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
Russian chemical bulletin → ACNP
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.