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Citation: WANG Hong-mei, TANG Xiao-shuan, CHU Yan-nan, ZHOU Shi-kang. Studies on the Quenching of SO (c¹Σ^－,v^’=0)[J]. Acta Physico-Chimica Sinica, ;2005, 21(11): 1195-1197. doi: 10.3866/PKU.WHXB20051101 shu

Studies on the Quenching of SO (c¹Σ^－,v^’=0)

1.
Laboratory of Environmental Spectroscopy; Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031

Received Date: 18 August 2005
Available Online: 15 November 2005

On a flowing afterglow apparatus, the quenching of SO(c¹Σ^－) by SO₂, O₂, CO₂, N₂, He, CS₂, CH₃OH, C₂H₅OH, C₃H₇OH, C₄H₉OH, CH₃COCH₃, C₆H₆, CH₂Cl₂, CH₂Br₂, CHCl₃, or CCl₄ was studied firstly and successfully. The quenching rate constants of SO(c¹Σ^－) by them were measured. By analysis, it demonstrates that the quenching rate constants of SO(c¹Σ^－) by the alkanol molecules, C_nH_2n+1OH(n=1, 2, 3, 4), are semi-proportional to the number of C—H bond in them; the quenching by the non-polar small molecules, such as CO₂ and N₂ is not efficient; while it is obvious by SO₂ because of its strong polarity. The size and volume of halogen atoms in the halomethane molecules play an important role in quenching SO(c¹Σ^－), and it seems that there is no evident correlation between the quenching rate constants and the number of the chlorine atom in the chlomethane molecules.
- SO(c¹Σ^－);Quenching rate constant;Alkanol molecules;Collisional complex;Dynamics
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Studies on the Quenching of SO (c¹Σ^－,v^’=0)