Original scientific paper

Vibrational Spectra of Orthodiamide Derivatives: The N-H Stretching Band of Some Benzimidazole Derivatives

Dragana Petrova ; Tehnološko-metalurški fakultet, Univerzitet »Sv. Kiril i Metodij«, Skopje, Macedonia
Ivan Petrov ; Institut za hemija, PMF, Univerzitet »Sv. Kiril i Metodij«, Skopje, Macedonia
Vladimir M. Petruševski ; Institut za hemija, PMF, Univerzitet »Sv. Kiril i Metodij«, Skopje, Macedonia

Abstract

The aromatic diamides derived from o-phenylenediamines, when treated with P2S5, gave 2-arylbenzimidazole derivatives as crystalline products. The IR spectra of these compounds are, like benzimidazole itself, characterized by the very broad, structured and intensive band due to the N-H stretching vibrations. Lowering of the temperature has a remarkable effect on both the N-H stretching and N-H out-of-plane bending vibrations. On deuteration, the substructure of the N-H stretch is completely changed. The low-temperature and deuteration studies strongly suggest that the whole sbus- tructure is a result of Evans-type Fermi resonance interactions.

Keywords

Hrčak ID:

135955

URI

https://hrcak.srce.hr/135955

Publication date:

4.3.1996.

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