Chemical reactions on clusters. 5. Gas-phase unimolecular decomposition of the CH/sub 3/OH, CH/sub 3/OD, CD/sub 3/OH, and CD/sub 3/OD ions in association with argon and carbon dioxide clusters
Ion clusters of the type Ar/sub n/ x X/sup +/ and (CO/sub 2/)/sub n/ x X/sup +/, where X is one of four isotopic variants of methanol, have been formed by electron impact following the adiabatic expansion of an inert gas/methanol mixture. In the case of argon clusters the product ions Ar/sub n/ x CH/sub 2/OH/sup +/ and Ar/sub n/ x COH/sup +/ (or their isotopic equivalents) are observed. For carbon dioxide clusters the only product ion is (CO/sub 2/) x CH/sub 2/OH/sup +/. A consideration of the available experimental data on the fragmentation pattern of methanol ions, and in particular results from charge-transfer and photoelectron spectroscopy experiments, supports the proposal that cluster-bound methanol ions are excited by charge transfer from the inert gas cluster as opposed to an individual inert gas atom or the ionizing electron. From a knowledge of the internal energy of the methanol ions a lower limit to the vibrational predissociation time has been calculated as 10/sup -12/ s.
- Research Organization:
- Univ. of Sussex, Falmer, England
- OSTI ID:
- 6772907
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:6; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM COMPOUNDS
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIFETIME
METHANOL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RARE GASES
SPECTROSCOPY