REACTIONS OF C2(API-3U) WITH CH4, C2H2, C2H4, C2H6, AND O2 USING MULTI-PHOTON UV EXCIMER LASER PHOTOLYSIS

C2(a 3πu) disappearance rate constants of 1.44, 0.96, 0.0296, 0.0130 and < 10-6(x10-10cm3s-1) are reported for reactions with C2H4, C2H2, O2, C2H6, and CH4, respectively at 298 K. C2(a 3πu) fragments are generated by multiphoton ArF excimer laser photodissociation at C2H2, and monitored by dye laser induced fluorescence. Arguments are presented which favor chemical reactions over the C2(a 3πu) → (X 1σ+g) quenching channel. C2 + C2H2 represents the one possible exception to the reactive channel. © 1979.