Kinetics of the reactions of NO sub 2 with CH sub 3 S, CH sub 3 SO, CH sub 3 SS, and CH sub 3 SSO at 297 K and 1 Torr

Journal Article · Thu Jul 26 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100378a043· OSTI ID:6447831

Domine, F; Murrells, T P; Howard, C J ^[1]

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1. Univ. of Colorado, Boulder (USA)

The rate constants for the reactions of NO{sub 2} with CH{sub 3}S (1), CH{sub 3}SO (2), CH{sub 3}SS (3), and CH{sub 3}SSO (4) have been measured at 297 K and 1 Torr in a discharge flow tube with photoionization mass spectrometric detection. The detection limits of the sulfur radicals studied were in the 10{sup 6} molecules cm{sup {minus}3} range. The rate constant values obtained are (in cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}) k{sub 1} = (5.1 {plus minus} 0.9) {times} 10{sup {minus}11}, k{sub 2} = (1.2 {plus minus} 0.25) {times} 10{sup {minus}11}, k{sub 3} = (1.8 {plus minus} 0.3) {times} 10{sup {minus}11}, and k{sub 4} = (4.5 {plus minus} 1.2) {times} 10{sup {minus}12}. The yield of CH{sub 3}SO in reaction 1 has been found to be unity. Curvature observed on some of the decay plots was attributed to the fragmentation of ions in the ionization chamber.

• OSTI ID: 6447831
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:15; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

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ATMOSPHERIC CHEMISTRY
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMISTRY
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
INFORMATION
KINETICS
LOW PRESSURE
MEASURING INSTRUMENTS
MEASURING METHODS
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS