LASER-ION BEAM PHOTODISSOCIATION STUDIES OF C4H4 RADICAL CATIONS
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The laserion beam photodissociation for [C4H4]+ ions produced from a variety of precursors has been studied. Based on the data it is apparent that two structurally distinct forms of the [C4H4]+ ion are produced by fragmentation of larger systems. The relative population of the various structural forms is very dependent on the internal energy of the fragmenting ion, with 1buten3yne [C4H4]+ ions being favored at low internal energies. As the internal energy of the reactant ion is increased, the relative population of butatriene [C4H4]+ ions increases. The laserion beam photodissociation technique is able to selectively sample these two structural forms. Copyright 1985 Wiley Heyden Ltd