# ELECTRONIC SPECTRA OF A DISCHARGE PRODUCT OF CARBON DISULFIDE: DETECTION OF A NEW IONIC SPECIES

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/20481

Files Size Format View
2002-RE-08.jpg 186.4Kb JPEG image

 Title: ELECTRONIC SPECTRA OF A DISCHARGE PRODUCT OF CARBON DISULFIDE: DETECTION OF A NEW IONIC SPECIES Creators: Nakajima, Masakazu; Yoneda, Yu; Sumiyoshi, Yoshihiro; Endo, Yasuki Issue Date: 2002 Publisher: Ohio State University Abstract: New electronic transition has been observed in the $18400-19800 cm^{-1}$ region by discharging the $CS_{2}$ molecule in a supersonic jet using a laser induced fluorescence technique. Since the vibronic bands completely disappear when the $C_{2}H_{2}$ sample is used, the spectral carrier contains the sulfur atom. Rotationally resolved spectra were obtained by high-resolution laser scans. The band type of all the bands is assigned to $^{2}\Pi_{3/2}-^{2}\Pi_{3/2}$, and the effective rotational constant of the ground electronic state has been determined to be $0.05047(4) cm^{-1}$. We concluded that the ground state of the radical is $^{2}\Pi_{i}$, and the spectral carrier may be an ionic species because both the carbon and sulfur atoms have even numbers of electrons. Based on the results of ab initio calculations, it is considered that the negative ion, $SCCS^{-}$, is the most probable candidate for the spectral carrier. Description: Author Institution: Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo URI: http://hdl.handle.net/1811/20481 Other Identifiers: 2002-RE-08