ULTRAVIOLET-ABSORPTION SPECTRA AND KINETICS OF CH3S AND CH2SH RADICALS

被引:33
作者
ANASTASI, C [1 ]
BROOMFIELD, M [1 ]
NIELSEN, OJ [1 ]
PAGSBERG, P [1 ]
机构
[1] RISO NATL LAB, CHEM REACTIV GRP, DK-4000 ROSKILDE, DENMARK
关键词
D O I
10.1016/0009-2614(91)90139-Z
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
The ultraviolet absorption spectra of CH3S and CH2SH radicals have been measured between 215 and 380 nm using the pulse-radiolysis/kinetic-absorption method. One absorption band between 250 and 300 nm and one around 215 nm have been tentatively assigned to the CH2SH and CH3S radicals, respectively. This spectrum has been used to measure the self-reaction rates of these radicals. Rate constants of 4 x 10(-11) and 7 x 10(-11) cm3 molecule-1 s-1 have been measured at 298 K for CH3S and CH2SH recombination, respectively. The possible reaction pathways are discussed.
引用
收藏
页码:643 / 648
页数:6
相关论文
共 25 条
[1]   RATE CONSTANTS FOR THE REACTIONS OF CH3 RADICALS WITH C2H5, I-C3H7 AND T-C4H9 RADICALS [J].
ANASTASI, C ;
ARTHUR, NL .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1987, 83 :277-287
[2]  
ANASTASI C, IN PRESS J PHYS CHEM
[3]  
ANASTASI C, 1990, 9TH INT C GAS KIN AS
[4]   DIMETHYL SULFIDE IN THE MARINE ATMOSPHERE [J].
ANDREAE, MO ;
FEREK, RJ ;
BERMOND, F ;
BYRD, KP ;
ENGSTROM, RT ;
HARDIN, S ;
HOUMERE, PD ;
LEMARREC, F ;
RAEMDONCK, H ;
CHATFIELD, RB .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1985, 90 (D7) :2891-2900
[5]   EVALUATED KINETIC AND PHOTOCHEMICAL DATA FOR ATMOSPHERIC CHEMISTRY .3. IUPAC SUBCOMMITTEE ON GAS KINETIC DATA EVALUATION FOR ATMOSPHERIC CHEMISTRY [J].
ATKINSON, R ;
BAULCH, DL ;
COX, RA ;
HAMPSON, RF ;
KERR, JA ;
TROE, J .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1989, 18 (02) :881-1097
[6]   KINETICS OF THE REACTION OF CH3S WITH NO, NO2 AND O-2 [J].
BALLA, RJ ;
NELSON, HH ;
MCDONALD, JR .
CHEMICAL PHYSICS, 1986, 109 (01) :101-107
[7]  
BARNES I, 1989, ACS SYM SER, V393, P464
[8]  
Benson S.W., 1976, THERMOCHEMICAL KINET
[9]   LASER-INDUCED FLUORESCENCE STUDIES OF THE CH3S RADICAL [J].
BLACK, G ;
JUSINSKI, LE .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1986, 82 :2143-2151
[10]   TRANSIENT SPECTRA AND PRIMARY PROCESSES IN FLASH PHOTOLYSIS OF CH3SSCH3, CH3SCH3, CH3SH AND C2H5SH [J].
CALLEAR, AB ;
DICKSON, DR .
TRANSACTIONS OF THE FARADAY SOCIETY, 1970, 66 (572) :1987-&