Dissociations of Manganese Carbonyl Cluster Ions
The structures and reactivities of cluster ions have been studied by a variety of mass spectrometric techniques. Among the methods which have been employed are ion cyclotron resonance (ICR) , multiphoton ionization/dissociation time of flight (MPD/TOF) mass spectrometry , and tandem mass spectrometry using magnetic sector instruments [3,4]. These techniques often provide complementary information. ICR has proven useful in studies of the formation and reactivities of clusters. This is due to the ability to trap ions for significant lengths of time, as well as to eject all ions from the trap other than the species under study . Tandem mass spectrometric techniques are useful because particular clusters can be mass selected and then fragmented with a collision gas . This can provide valuable structural information. Recent work in MPD/TOF has given considerable insight into the photochemistry and structures of several cluster systems . Information about the energetics of cluster formation and about both ground and excited states can often be obtained.
KeywordsExcess Internal Energy Photodissociation Spectrum Magnetic Sector Instrument Initial Internal Energy Unimolecular Fragmentation
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