  Ion-neutral chemical reactions are important in several areas of chemistry,
including in some regions of the interstellar medium, planetary atmospheres,
and comets. Reactions of CCl+ with C2H2 are measured and the main products
include c-C3H2+ and l-C3H+, both relevant in extraterrestrial environments.
Accurate branching ratios are obtained, which favor formation of c-C3H2+ over
l-C3H+ by a factor of four. Measured rate constants are on the order of
Langevin and complementary electronic structure calculations are used to aid in
the interpretation of experimental results.
