Abstract
A time-resolved study of gas-phase reactions of copper atoms with methylacetylene (MA) and dimethylacetylene (DMA) has been undertaken, using Ar buffer gas at total pressures in the range 10-600 Torr. At 292 and 325 K, both reactions display kinetics consistent with formation of a 1:1 complex, which may either redissociate or add a second ligand to form a 1:2 complex. The copper atom decay kinetics followed single-exponential behavior, which indicates that the intermediate 1:1 complex was at steady-state. Perturbations to the kinetics were observed due to the presence of large mole fractions of reactant in the buffer gas
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