Determination of the branching ratios for the reaction of hot H atoms with BrCN and CICN.
The relative rates for the reaction of translationally energetic H atoms with XCN to yield HNC + X, HCN + X, and HX + CN, where X is Br or Cl, have been determined using time- and frequency-resolved absorption spectroscopy. The H atoms were created with an average translational energy of 92 kJ mol{sup -1} by the laser photolysis of CH{sub 3}SH at a wavelength of 248 nm. The measurements were carried out at a total pressure of several torr. The dominant channel for each reaction system was the production of hydrogen isocyanide, HNC. The relative branching ratios for H + BrCN and H + ClCN were determined to be 0.85/0.13/0.017 and 0.74/0.25/0.01 for the HNC/HCN/HX + CN channels, respectively. The ratio of the total reaction cross sections, {sigma}{sub XCN}, was found to be {sigma}{sub BrCN}/{sigma}{sub ClCN} = 0.84.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 943176
- Report Number(s):
- ANL/CHM/JA-38020
- Journal Information:
- J. Phys. Chem. A, Journal Name: J. Phys. Chem. A Journal Issue: 24 ; 2001 Vol. 105; ISSN 1089-5639; ISSN JPCAFH
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Experimental determination of the {nu}{sub 1} fundamental vibrational transition moment for HNC.
Rotational and translational energy distributions of CN(v=0,J) from the hot atom reactions : H + XCN {yields} HX + CN(v=0,J), where X = Br, C1, and CN.
Rotational and translational energy distributions of CN(v=0,J) from the hot atom reactions: H+XCN{yields}HX+CN(v=0,J), where X=Br, Cl, and CN
Journal Article
·
Thu Feb 18 23:00:00 EST 1999
· Chem. Phys. Lett.
·
OSTI ID:942324
Rotational and translational energy distributions of CN(v=0,J) from the hot atom reactions : H + XCN {yields} HX + CN(v=0,J), where X = Br, C1, and CN.
Journal Article
·
Sat Apr 15 00:00:00 EDT 2000
· J. Chem. Phys.
·
OSTI ID:942726
Rotational and translational energy distributions of CN(v=0,J) from the hot atom reactions: H+XCN{yields}HX+CN(v=0,J), where X=Br, Cl, and CN
Journal Article
·
Sat Apr 15 00:00:00 EDT 2000
· Journal of Chemical Physics
·
OSTI ID:20215809