title: State-Specific Reactions of Cu(+)((1)S,(3)D) with SF6 and SF5Cl.
abstract: State-specific reactions of Cu(+)((1)S,(3)D) were carried out in a selected ion drift cell apparatus with SF6 and SF5Cl. Copper ions were prepared in a glow discharge utilizing Ne as the working gas. Analysis of Cu(+) states using ion mobility mass spectrometry (IMS) indicated the presence of both Cu(+)(3d(10)) and Cu(+)(3d(9)4s(1)) configurations attributable to the (1)S ground and (3)D first excited states of this metal ion, respectively. State-specific product formation in reactions of these ions with the two neutral substrates of interest here was determined using IMS along with both known and calculated energetic requirements for product formation. These experiments indicate that Cu(+)((1)S) associates with both SF6 and SF5Cl; however, the process is approximately four times as efficient with the latter neutral under these conditions. Association is also observed as a minor product between Cu(+)((3)D) and both neutral reactants. Inefficient formation of SF3(+) occurs as the sole bimolecular product from SF6 via Cu(+)((3)D). In contrast, Cu(+)((3)D) reacts with SF5Cl in rapid parallel bimolecular processes yielding SF3(+) and CuCl(+). These results also indicate that CuCl(+) initiates additional higher-order processes which result in SF5(+) and SF4Cl(+). The energetics associated with the formation of SF3(+) suggest that a copper halide neutral byproduct must also be formed, requiring a more complex mechanism than simple dissociative charge-transfer.
authors.affiliation: Department of Chemistry, University of Central Arkansas , Conway, Arkansas 72035, United States.
authors.forename: William S
authors.initials: WS
authors.lastname: Taylor
authors.affiliation: Department of Chemistry, University of Central Arkansas , Conway, Arkansas 72035, United States.
authors.forename: Xavier S
authors.initials: XS
authors.lastname: Redmon
authors.affiliation: Department of Chemistry, University of Central Arkansas , Conway, Arkansas 72035, United States.
authors.forename: Benjamin A
authors.initials: BA
authors.lastname: Scheuter