The photoionization of N₂ plays a key role in initiating the formation of complex organic molecules in the nitrogen-rich atmosphere of Saturn’s largest moon, Titan. To date, only a handful of laboratory studies have explored the reactivity of N₂⁺ ions with hydrocarbons─limited to methane, acetylene, and ethylene─at the low temperatures relevant to Titan. Here, the rate coefficients, product identity, and branching ratios of the ion–molecule reactions of N₂⁺ with C₃H₄ isomers, namely, propyne CH₃CCH and allene CH₂CCH₂, were measured between 24 and 72 K in uniform supersonic flows.

Eredeti fellelhetőség: mtmt.hu