6533b82cfe1ef96bd128f467

RESEARCH PRODUCT

The influence of internal degrees of freedom on the unimolecular decay of the molecule–cluster compound Au8+CH3OH

Manuel VogelAlexander HerlertKlavs HansenLutz SchweikhardClemens Walther

subject

Reaction rate constantFragmentation (mass spectrometry)ChemistryBinding energyPhotodissociationDegrees of freedom (physics and chemistry)General Physics and AstronomyPhysical chemistryMoleculePhysical and Theoretical ChemistryAtomic physicsExcitationIon

description

Time-resolved photodissociation measurements of the sequential reaction Au8+CH3OH→Au8+→Au7+ and the direct reaction Au8+→Au7+ have been performed for several excitation energies. The production rates and yields of the final state Au7+ in the sequential process are strongly influenced by the excitation energy deposited into the evaporated methanol molecule during the initial fragmentation step. Both the rate constants and yields can be fitted with a single parameter, the cluster–methanol binding energy.

https://doi.org/10.1063/1.1476934