# THE NEAR U. V. SPECTRA OF THE OXALYL HALIDES

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/15160

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 Title: THE NEAR U. V. SPECTRA OF THE OXALYL HALIDES Creators: Balfour, W. J.; King, G. W. Issue Date: 1966 Publisher: Ohio State University Abstract: The discrete banded absorption spectra of the oxalyl dihalides, $(COX)_{2}$ where $X = F, Cl$ and Br, in the region 2800 to $4400{\AA}$ have been examined under high resolution. Electronic transitions of symmetry $^{1}A_{u}\leftarrow{^{1}}A_{g}$ and $^{2}A_{u}\leftarrow{^{1}}A_{g}$ have been identified, the upper state resulting from $n\rightarrow \pi^{\ast}$ electron promotion. The molecules remain planar and trans in the excited state. Main features of the vibrational structure can be explained in terms of progressions in the totally symmetric $C \approx O$ stretching, OCX scissors and OCX rocking vibrations and sequences in the torsional frequency. Description: Author Institution: Department of chemistry, McMaster University URI: http://hdl.handle.net/1811/15160 Other Identifiers: 1966-Y-5