Bimolecular reaction of a local mode vibrational state: H + H sub 2 O(4. nu. sub OH ) yields OH(v,J) + H sub 2

Journal Article · Thu May 31 00:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100374a005· OSTI ID:6379137

Sinha, A ^[1]

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1. Univ. of Wisconsin, Madison (USA)

Vibrational overtone excitation of water to the {vert bar}04>{sup {minus}} local mode state is used to initiate the endothermic bimolecular reaction of hydrogen atoms with water molecules. A probe of the nascent OH product using laser-induced fluorescence indicates that this fragment receives less than 10% of the {approximately}9,000 cm{sup {minus}1} of available energy consistent with a spectator model. Most of the OH fragments ({approximately}98%) are formed in the vibrational ground state with an average of 360 cm{sup {minus}1} of rotational energy and {approximately}350 cm{sup {minus}1} of translational excitation. The present results on the H + H{sub 2}O system demonstrate the feasibility of using vibrational overtone excitation to promote bimolecular reactions involving reagents containing light hydrogen atom stretching motion and, thus, investigate the influence of local mode excitation on chemical reactivity.

• OSTI ID: 6379137
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 94:11; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROGEN
CHEMICAL REACTIONS
WATER
DATA ANALYSIS
EXPERIMENTAL DATA
MEASURING INSTRUMENTS
MEASURING METHODS
VIBRATIONAL STATES
DATA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN COMPOUNDS
INFORMATION
NONMETALS
NUMERICAL DATA
OXYGEN COMPOUNDS
400201* - Chemical & Physicochemical Properties