Oxides of long carbon chains: Results obtained on IR and UV–vis absorptions

Abstract: The IR and UV–vis absorptions of oxides of long carbon chains trapped in cryogenic matrices were investigated experimentally and theoretically. Some of the IR-lines were assigned to the oxides of certain carbon chains using the method of isotopic substitution of matrix material (16O2/18O2, 12CO/13CO) and the technique of selective UV–vis photo-bleaching. Our data, along with quantum chemical calculations suggest that the wavelength positions of the major UV–vis and IR absorptions of the oxides C n O, OC n O, and of the parent carbon chains C n are located in close vicinity. [Copyright &y& Elsevier]