IR Spectra of Azinobenzimidazoles and Compounds Containing an Azacyanine Chromophore

摘要: Stretching vibration bands of the endocyclic CIC, CIN bonds in IR spectra pyrido-[1,2-a]benzimidazoles, pyrimido[1,2-a]benzimidazoles, and boron neutral Pd(II) chelates on basisof 2,2'-dipyridylamine benz[c,d]indolylamine are located at 1640±10, 1610±10, 1470±10 cm-1. In addition, pyrido[1,2-a]benzimidazole derivatives, borone like diphenylboryl[pyridin-2(1H)-ylidene]aminopyridinium, palladium bis(2-[pyridin-2(1H)-ylidene]aminopyridine)palladium characterized by strong CIC absorption 1505±10 cm-1; corresponding band dimethylpyrimido[1,2-a]benzimidazole derivatives is observed 1540±10