The bimolecular reactivity of molecular dications in the gas phase is reviewed from an experimental point of view. Recent research has demonstrated that in addition to the ubiquitous occurrence of electron transfer in the reactions of gaseous dications with neutral molecules, bond-forming reactions play a much larger role than anticipated before. Thus, quite a number of hydrogen-containing dications show proton transfer to neutral reagents as an abundant or even as the major pathway, and also the nature of the neutral reagent itself is decisive for the amount of proton transfer which takes place. Further, several hydrocarbon dications C(m)H(n)(2+) of medium size (m = 6-14, n = 6-10) undergo bond-forming reactions with unsaturated hydrocarbons such as acetylene or benzene, thereby offering new routes for the formation of larger aromatic compounds under extreme conditions such as interstellar environments. Likewise, recent results on the bimolecular reactivity of multiply charged metal ions have revealed the occurrence of a number of new bond-forming reactions which open promising prospects for further research.

• MeSH
• acetylen chemie   MeSH
• benzen chemie   MeSH
• cyklotrony přístrojové vybavení   MeSH
• financování organizované MeSH
• fotochemie MeSH
• hmotnostní spektrometrie metody   přístrojové vybavení   MeSH
• kationty chemie   MeSH
• kovy chemie   MeSH
• plyny chemie   MeSH
• protony MeSH
• teplota MeSH
• termodynamika MeSH
• transport elektronů MeSH
• uhlovodíky chemie   MeSH
• vodík MeSH