Vibrational-mode-specific energy consumption. Translational and vibrational state dependence of the Ba + N2O (v 1, v 2, v 3)? BaO*+ N2 reaction
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions of the Chemical Society
- Vol. 67, 97-109
- https://doi.org/10.1039/dc9796700097
Abstract
The excitation functions CL(E, Tv) for forming chemiluminescent (CL) products in the (Ba + N2O) reaction is found to depend sensitively on N2O vibrational temperature Tv. In a second experiment thermal rate constants for CL production kCL, and for Ba beam attenuation kT, were measured as functions of N2O temperature, and activation energies were obtained. Analysis shows that v2-bending acts as promoting mode, and participation by v1(N–O stretch) is highly likely. Promotion by v2 is consistent with the initial formation of an ion pair Ba+N2O–. Rearrangement of this intermediate to BaO*(A′1Π) products, believed to be the CL emitter, is adiabatically allowed.Keywords
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