Quenching Rate Constants of NF(A1 Delta) by N2F4, NF3, NF(X), SiF4, HNCO and NCO at Room Temperature
Abstract
A flow reactor has been used to measure the room temperature rate constants for quenching of NF(a(sub1) Delta) by molecules containing the NF bond and by SiF4, HNCO, and NCO. The quenching rate constants decrease in the series NF(X), N2F4, NF2, and NF3. The rate constant for NF(X) is (3 + or - 1) x 10(exp -10) cu cm/molecule/s, which is smaller than the bimolecular self-destruction rate constant of NF(a). The quenching rate was so slow for NF3 that only an upper limit to the rate constant, 1.6 x 10(exp -17) cu cm/molecule/s, could be measured. The quenching constant for SiF4 is also small, approximately 1.4 x 10(exp -16) cu cm/molecule/s. The rate constants for HNCO and NCO were measured because these molecules were utilized in the generation of NF(X); estimates for their rate constants are (4.5 + or - 1.0) x 10(exp -13) cu cm/molecule/s. The quenching constants for HNCO and NCO are consistent with those for other carbonyl-containing molecules
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1993
- Accession Number
- ADA268372
Entities
People
- D. W. Setser
- K. Du
Organizations
- Kansas State University