Threshold Collision-Induced Dissociations for the Determination of
Accurate Gas-Phase Binding Energies and Reaction Barriers
глава 8, стр. 233--262. Springer Berlin / Heidelberg, (2003)Аннотация
Over the past two decades, an analysis of the kinetic energy dependence
of ion molecule reactions has proven to yield accurate thermochemistry
for a wide range of interesting chemical species. In this article,
the experimental methods required to collect the data, most notably
guided ion beam mass spectrometry, are reviewed along with a comprehensive
overview of the details of the requisite data analysis. Although
the emphasis of the article is on collision-induced dissociation
(CID) reactions, similar methods can also be applied to endothermic
bimolecular reactions. For CID studies, the systems are generally
chosen such that the threshold corresponds to the bond energy desired,
but studies in which reaction barriers have been measured are also
reviewed. The range of chemical systems accessible by these techniques
is wide and includes small covalently bound molecules (both inorganic
and organic), small non-covalently bound complexes, metal ligand
complexes, metal clusters, isomeric forms, and systems involving
biologically relevant molecules. A fairly comprehensive review of
various studies of such systems is included.