Formation of the iodine monoxide radical from gas-phase reactions of iodoalkyl radicals with molecular oxygen

被引:12
作者
Enami, Shinichi [1 ]
Yamanaka, Takashi
Hashimoto, Satoshi
Kawasaki, Masahiro
Tonokura, Kenichi
Tachikawa, Hiroto
机构
[1] CALTECH, WM Keck Lab, Pasadena, CA 91125 USA
[2] Kyoto Univ, Dept Mol Engn, Kyoto 6158510, Japan
[3] Univ Tokyo, Ctr Environm Sci, Tokyo 1130033, Japan
[4] Hokkaido Univ, Fac Engn, Dept Chem Mat, Sapporo, Hokkaido 0608628, Japan
关键词
D O I
10.1016/j.cplett.2007.08.025
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Formation of the iodine monoxide radical (IO) was observed during the reaction of iodoalkyl radicals (RCHI) or cyclo-C6H10I radical with O-2 at 298 K using cavity ring-down spectroscopy, where R stands for CnH2n+l (n = 0-3). The yields of IO from the reactions of various RCH2I species with Cl atom in the presence of O-2 were determined. The energy level diagrams derived from theoretical calculations for each individual reaction support the formation of IO radicals via a direct RCHI radical oxidation pathway. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:152 / 156
页数:5
相关论文
共 23 条
  • [1] [Anonymous], 1989, Chemical Kinetics and Dynamics
  • [2] Laboratory studies of the homogeneous nucleation of iodine oxides
    Burkholder, JB
    Curtius, J
    Ravishankara, AR
    Lovejoy, ER
    [J]. ATMOSPHERIC CHEMISTRY AND PHYSICS, 2004, 4 : 19 - 34
  • [3] Potential influence of iodine-containing compounds on the chemistry of the troposphere in the polar spring. I. Ozone depletion
    Calvert, JG
    Lindberg, SE
    [J]. ATMOSPHERIC ENVIRONMENT, 2004, 38 (30) : 5087 - 5104
  • [4] Kinetics of the reactions of CF3O2 radicals with Cl and I atoms
    Canosa-Mas, CE
    Vipond, A
    Wayne, RP
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (05) : 761 - 766
  • [5] Kinetic study of the reactions of OH with the simple alkyl iodides:: CH3I, C2H5I, 1-C3H7I and 2-C3H7I
    Cotter, ESN
    Canosa-Mas, CE
    Manners, CR
    Wayne, RP
    Shallcross, DE
    [J]. ATMOSPHERIC ENVIRONMENT, 2003, 37 (08) : 1125 - 1133
  • [6] Release of iodine in the atmospheric oxidation of alkyl iodides and the fates of iodinated alkoxy radicals
    Cotter, ESN
    Booth, NJ
    Canosa-Mas, CE
    Wayne, RP
    [J]. ATMOSPHERIC ENVIRONMENT, 2001, 35 (12) : 2169 - 2178
  • [7] Laser induced fluorescence studies of iodine oxide chemistry Part II. The reactions of IO with CH3O2, CF3O2 and O3
    Dillon, Terry J.
    Tucceri, Maria E.
    Crowley, John N.
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2006, 8 (44) : 5185 - 5198
  • [8] Kinetic study of the ClOO plus NO reaction using cavity ring-down spectroscopy
    Enami, S
    Hoshino, Y
    Ito, Y
    Hashimoto, S
    Kawasaki, M
    Wallington, TJ
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2006, 110 (10) : 3546 - 3551
  • [9] Direct observation of adduct formation of alkyl and aromatic iodides with Cl atoms using cavity ring-down spectroscopy
    Enami, S
    Yamanaka, T
    Hashimoto, S
    Kawasaki, M
    Tonokura, K
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2005, 109 (27) : 6066 - 6070
  • [10] Formation of iodine monoxide radical from the reaction of CH2I with O2
    Enami, S
    Ueda, J
    Goto, M
    Nakano, Y
    Aloisio, S
    Hashimoto, S
    Kawasaki, M
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2004, 108 (30) : 6347 - 6350