Abstract
The reactions of free, size selected gold and silver cluster cations Ag n + and Au n + ( n = 3, 5) with C 6H 6 as well as with a mixture of C 6H 6 and CO were investigated in a radio frequency ion trap under multiple collision condition. While benzene was found to react with all investigated metal clusters exhibiting size dependent adsorbate coverages, the coadsorption of C 6H 6 and CO was only observed on the gold clusters. Photodissociation experiments at 353 and 393 nm, respectively, provided indications for charge transfer induced fragmentation in the case of the silver cluster–benzene complexes. In particular, for Ag 5 ( C 6 H 6 ) 2 + the femtosecond time resolved fragmentation dynamics could be measured.
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