Ma. Gaveau et al., CHEMILUMINESCENT BA+N2O REACTION IN MOLECULAR CLUSTERS OF CH4 AND MIXED AR CH4 CLUSTERS/, Chemical physics letters, 246(3), 1995, pp. 307-314
We report measurements of visible chemiluminescence from a molecular c
luster environment. Chemiluminescence spectra of the Ba + N2O reaction
on pure CH4 clusters and on Ar clusters with a small fraction of CH4
have been measured and compared. As in the case of pure Ar clusters, t
here is a spectral contribution from rovibrationally 'hot' BaO, which
is ejected immediately after the reaction, and a contribution from 'c
old' solvated BaO. When using pure CH4 clusters the vibrational struc
ture of the latter is washed out and a considerable blue-shift observe
d. From mixed Ar/CH4 clusters a superposition of pure cluster spectra
is observed, and the blue-shift of the component influenced by CH4 is
smaller than on pure CH4 clusters. This is interpreted by the formatio
n of a still-luminescent BaO-CH4 complex solvated on the Ar cluster.