Collisional deactivation of N sub 2 (A sup 3. Sigma. sub u sup + , v = 0-6) by CH sub 4 , CF sub 4 , H sub 2 , H sub 2 O, CF sub 3 Cl, and CF sub 2 HCl
- Univ. of Pittsburgh, PA (USA)
Rate constants for collisional deactivation of N{sub 2}(A{sup 3}{Sigma}{sub u}{sup +}, {nu}{sub N}) by CH{sub 4}({nu}{sub N} = 1-6), CF{sub 4}({nu}{sub N} = 1-6), H{sub 2}({nu}{sub N} = 2-6), D{sub 2}({nu}{sub N} = 0, 1, 3, 5, 6), H{sub 2}O({nu}{sub N} = 4-6), D{sub 2}O({nu}{sub N} = 0-6), CF{sub 3}Cl({nu}{sub N} = 0-6), and CF{sub 2}HCl({nu}{sub N} = 0-6) have been measured by using a discharge-flow system. For all these reagents, which are inefficient quenchers of N{sub 2}(A, {nu}=0), the rate constant increases markedly with {nu}N. The branching between vibrational relaxation and electronic quenching is assessed for each reagent. The energy-transfer data are discussed in terms of near-vertical electronic transitions in the interacting species and also in terms of recent ab initio calculations of potential energy surfaces for the interactions of N{sub 2}(A) and CO(a{sup 3}II) with H{sub 2}.
- OSTI ID:
- 5144130
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:3; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540110
ALKANES
BRANCHING RATIO
CHLORINATED ALIPHATIC HYDROCARBONS
COLLISIONS
DE-EXCITATION
ELECTRONIC STRUCTURE
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
FLUORINATED ALIPHATIC HYDROCARBONS
FLUOROFORM
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
METHANE
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
RADIATIONLESS DECAY
RELAXATION
WATER