Email RIS file
Bookmark
Report an Issue

Infrared absorption spectroscopy and chemical kinetics of free radicals. Progress report, February 1, 1991--March 1, 1994 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
13 pages : digital, PDF file
Additional Creators
Rice University, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Rate of reaction of ketenyl radical with O₂ at room temperature was determined as 6.5(6) × 10-{sup −13} CM³ molecules{sup −1} s{sup −1} and an upper bound of 1 × 10{sup −13} cm³ molecule{sup −1} s{sup −1} was estimated for the reaction rate of acetylene with ketenyl. The high resolution spectrum of the ν1 acetylenic CH stretch of propargy1 radical (HCCCH₂) near 3322 cm{sup −1} has obtained and analyzed. Nuclear spin weights demonstrate that the CH₂ hydrogen atoms are in the carbon atom plane. We have attempted to measure the propargy1 recombination rate constant at 296 K; however, the observed rate constant of (1.2×0.2) x 10{sup −10} cc-molecule{sup −1}-s{sup −1} may be affected by other reactions. The CH stretch fundamental, ν1, of HCCN has been observed, assigned, and analyzed. Analysis of the hot bands associated with bending shows that HCCN is a quasilinear molecule with a very floppy potential function for the HCC bending angle. The barrier to linearity is estimated to be about 100 cm{sup −1}. Rate of the reaction between C₂H and H₂ has been measured at 295--855 K. The rate constant exhibited a non-Arrhenius form well represented by k = (9.44±0.50) × 10{sup −14}T{sup 0.9}exp(-1003±40/T)cm³molecule{sup −1}s{sup −1}. The reaction between atomic oxygen and the amidogen radical, NH₂ has been studied at 295 K; the room temperature rate constant was measured as (6.5 ± 1.3) × 10{sup −1} s{sup −1}. The minor channel leading to NH + OH was observed but accounted for at most about 8% of the NH₂ reacting. The rate constant for the reaction NH+O was determined from fitting the NH time profile to be 6.6±10{sub −11} cm³ molecule{sup −1} s{sup −1}.
Report Numbers
E 1.99:doe/er/13439--t4
doe/er/13439--t4
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
08/01/1994.
"doe/er/13439--t4"
"DE94016642"
"KC0301020"
Glass, G.P.; Curl, R.F.
Type of Report and Period Covered Note
Interim; 01/01/1991 - 12/31/1994
Funding Information
FG05-85ER13439
View MARC record | catkey: 14394548