Abstract
The carbene cation:C4N+ was generated in a Selected-Ion Flow Tube (SIFT) apparatus from allyl cyanide by electron impact and reacted at room temperature in helium buffer gas at ca. 0.33 mm Hg with the molecules H2, CO, HCN, CH4, CD4, H2O, HC3N, C2H2, CH3CN, CD3CN, H2S, NH3, ND3, and C4H2. The reactions were observed to exhibit a range in reactivity and a variety of reaction products. The observed products are consistent with expectations based on the carbene character of:C4N+. The results have implications for the role of:C4N+ as a reaction intermediate in the chemistry of interstellar gas clouds. Possible synthetic routes initiated by:C4N+ are proposed for the formation of dicyanoacetylene, cyanodiacetylene, and several acyclic as well as cyclic neutral carbenes.
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