Ionic species obtained by electron impact on (OCS)n clusters produced by expansion of OCS mixed with argon at two different (OCS/argon) concentrations are studied as a function of stagnation pressure and electron energy. Ionization efficiency curves of homogeneous cluster ions (OCS)n+, homogeneous sulfur cluster ions Sm+ and inhomogeneous ions (OCS)n Sm+ are analyzed. Several reactions paths, ending in Sm+ have been identified. The strong correlation between reaction path and cluster size is discussed. Finally, by minimization of the potential function created by dipole-dipole dipole-quadrupole, and quadrupole-quadrupole interactions between OCS molecules we propose the geometrical configurations of neutral (OCS)n (n =2-5) clusters.

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Journal J. Chem. Phys.
Citation
Frazao, J. M. A, Lourenço, J. M. C, Aurea Cunha, M, Laranjeira, M. F, Los, J. H, & Moutinho, M. C. (1996). The sulfur reaction in small ionized carbonyl sulfide clusters. J. Chem. Phys., 104, 8393–8404.