engleski

Vibrational analysis of diacetylenic aromatic compounds

Spectroscopic measurements of aromatic acetylenic and diacetylenic compounds show that in IR spectral region 2300-2000 cm^-1 only one band (at ~ 2105 cm^-1) corresponding to the acetylenic stretching is observed. However, in IR spectra of solid 2, 6-diethynylpyridine and 1, 2-diethynyl-4, 5-dimethoxybenzene, the mentioned region is rich with bands. It is reasonable to assume that additional bands are a consequence of a crystal packing, non-specific and directional intermolecular interactions.

IR and Raman spectroscopy; diacetilenic compounds; intermolecular interactions

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