Gas-phase chemistry of NF (a/sup 1/. delta. ): quenching rate constants

Journal Article · Thu Sep 24 04:00:00 EDT 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100304a005· OSTI ID:5527946

Habdas, J; Setser, D W

The reaction of excess F atoms with HN/sub 3/ in a halocarbon-coated flow reactor has been used to generate and study the quenching reaction of NF(a/sup 1/..delta..,v'=0) at 300 K. Fifteen reagents, selected to represent a variety of chemical interactions, were tested in order to provide a survey of quenching rate constants that could be compared to O/sub 2/(a/sup 1/..delta../sub g/) and NH(a/sup 1/..delta..). A range of rate constants was found which varied from approx. 1.0 x 10/sup -11/ cm/sup 3/ s/sup -1/ for N(CH/sub 3/)/sub 3/ to approx. 1.0 x 10/sup -15/ cm/sup 3/ s/sup -1/ for N/sub 2/, H/sub 2/, and NO. The NF(a/sup 1/..delta..) molecule is much less reactive than NH(a/sup 1/..delta..), and it seems to more closely resemble O/sub 2/(a/sup 1/..delta../sub g/). However, the quenching rate constants for NF(a/sup 1/..delta..) generally are larger than for O/sub 2/(a/sup 1/..delta../sub g/) and show a greater variation from one reagent to another. The self-quenching rate constant for NF(a/sup 1/..delta..) is (2.2 +/- 1.2) x 10/sup -12/ cm/sup 3/ s/sup -1/ with energy pooling to give NF(b/sup 1/Sigma/sup +/) being a small component of the total self-quenching reaction.

• Research Organization: Kansas State Univ., Manhattan
• OSTI ID: 5527946
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:20; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CHEMICAL REACTIONS
DATA
DE-EXCITATION
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
FLUORINE
FLUORINE COMPOUNDS
GASES
HALOGEN COMPOUNDS
HALOGENS
HYDROGEN COMPOUNDS
INFORMATION
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
QUANTITY RATIO
RADIATIONLESS DECAY