|dc.description.abstract||Both El MS and FAB MS behavior of two groups of compounds, aryltin and
ferrocene compounds, have been studied.
For the aryltin compounds, the effect of substituent group position, substituent
group type and ligand type on the El spectra have been explored in the El MS studies.
The fragmentation mechanism has been investigated under El with linked scans, such as
fragment ion scans(BJE), parent ion scans(B2JE) and constant neutral radical loss
scans(B2(1-E)JE2). In the FAB MS studies, matrix optimization experiments have been
carried out. The positive ion FAB MS studies focused on the effect of substituent group
position, substituent group type and ligand type on the spectra. The fragmentation
mechanisms of all the samples under positive ion FAB have been studied by means of the
linked scans. The CA positive ion FAB fragmentation studies were also carried out for a
typical sample. Negative ion FAB experiments of all the compounds have been done.
And finally, the comparison of the El MS and FAB MS has been made.
For ferrocenes, the studies concentrated on the fragmentation mechanism of each
compound under El with linked scan techniques in the first field-free region and the
applicability of positive/negative ion FAB MS to this group of compounds. The
fragmentation mechanisms under positive ion FAB of those ferrocenes which can give
positive ion FAB MS spectra were studied with the linked scan techniques. The CA +ve
F AB fragmentation studies were carried out for a typical sample. Comparison of the E1
MS and FAB MS has been made.||en_US