Abstract
Optothermal near infrared laser spectroscopy has been used to study the OCO-HCl and SCO-HCl complexes by exciting the H-Cl stretch using an F-center laser. In both cases, the two isotopic forms associated with H35Cl and H37Cl have been observed. All of the observed spectra are consistent with and analyzed in terms of a linear structure. Vibrational predissociation is observed to be abnormally fast in the OCO-HCl complex, considering the rather weak coupling between the intermolecular degrees of freedom and the H-Cl stretch suggested by the small vibrational frequency shift associated with complex formation. Comparisons are made between the two systems studied here that indicate that this anomalous rate is due to a near resonance between the energy available to the fragments after the photodissociation of the complex and the asymmetric stretch of the CO2 fragment.
Original language | English (US) |
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Pages (from-to) | 8515-8522 |
Number of pages | 8 |
Journal | Journal of Chemical Physics |
Volume | 105 |
Issue number | 19 |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry