C2 is a gaseous carbon molecule in the universe, which exists in carbon stars, the sun and comets, and is generated in the way of hydrocarbon dehydrogenation in extremely exothermic reactions.
Citation explanation
C2 is generated in many chemical reactions, such as the dehydrogenation of hydrocarbons in extremely exothermic reactions, or at extremely high temperatures
C two The ground state structure of the molecule is very special