Abstract
The reactions of C2n+1N− anions and their complexes with cyanoacetylene, HC3N, and hydrogen cyanide, HCN, were studied experimentally using methods of tandem mass spectrometry. The experiments showed that bare C2n+1N− anions react with HC3N rather slowly by elimination of HCN and formation of C2n+3N− anion. On the other hand, when the C2n+1N− anions are solvated by one or more HC3N molecules, this reaction becomes significantly more efficient. A mechanism and energetics of this reaction were also studied by ab initio methods of quantum chemistry. The reactions described in detail in this communication may represent a possible way of formation of large anions found in the ionosphere of Titan.
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