Intracluster reactions

H. Intracluster Reactions Initiated through Photon Absorption.234... 

Thereupon, the excited clusters undergo intracluster reactions (below). 

Intracluster reactions are often induced by photons, as discussed in several chapters in this volume. One reason for the strong interest in such processes is that the relative geometries of the reagents are dictated by the cluster geometry so that one can, in principle, control the stereochemistry between them as if carrying out bimolecular collisions with oriented reactants (Wittig et al. 1988). 

It was recently reported that the nucleophilic aromatic substitution of equation 11 occurs efficiently within the photoionized van der Waals complex C6H5C1—NH3 52, an interesting case of intracluster reaction (see Section II.A.3.c). Thus, selective ionization of the van der Waals complex C6H5C1—NH3 prepared in a supersonic molecular beam led to the efficient production of C6H5NH3 and Cl via the intermediate C6H5Cl+ -NH3 complex. 

B. Condensation Modeling Intracluster Reactions Intercluster Reactions... 

A description of the experimental difficulties involved in the study of reactions of vdW molecules and clusters is given in Section II. It is followed by a discussion of the intracluster reactions and then a description of some of the intercluster processes studied. We end with some thoughts on the future prospects of this field. 

Any future development in the study of the reactions of vdW molecules must be related to solving the technical difficulty of sorting clusters according to their size. Several approaches may be taken. In intracluster reactions one may be able to use spectroscopy to initiate reactions in a well-defined complex. For example, in the complexes of HgHj one can excite this complex selectively due to its shifted absorption versus the atomic resonance line. 

Stert V, Ritze HH, Farmanara P, Radloff W. 2001a. Mechanism of the laser initiated ultrafast intracluster reaction in Ba - FCH3 and Ba - - -FCD3 . Phys. Chem. Chem. Phys. 3(18) 3939-3945. 

Intracluster Reactions Benzene/Isoprene and Benzene/Isoprene/Propene Clusters. The mass spectra of the binary benzene-isoprene and the ternary benzene-isoprene-propene clusters following die muMphoton ionization at 248 run are shown in Figures 8-a and 8-b, respectively. 

Laser-Induced Control of (Multichannel) Intracluster Reactions— The Slowest is Always the Easiest to Take. 

Walker NR, Walters RS, Grieves GA, Duncan MA (2004) Growth dynamics and intracluster reactions in NF(C02)n complexes via infrared spectroscopy. J Chem Phys 121 10498-10507... 

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