2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/131764The structural and electronic properties of the carbonyl sulfide dimer anion are calculated using density functional theory within a pseudopotential method. Three geometries are optimized and investigated: C2v and C2 symmetric, as well as one asymmetric structure. A distribution of an excess charge in three isomers are studied by the Hirshfeld method. In an asymmetric (OCS)2^- isomer the charge is not equally divided between the two moieties, but it is distributed as OCS^{-0.6} OCS^{-0.4}. Low-lying excitation levels of three isomers are compared using the time-dependent density functional theory in the Casida approach.pdf (included all figures): http://www.phy.hr/~goranka/Research/ocs.pdfMaterials ScienceAtomic and Molecular ClustersChemical Physicstext