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Crossed-Beam Scattering Studies of Electron-Transfer Processes between the Dication CO22+ and Neutral CO2: Electronic States of Reactants and Products Involved

Zabka, J; Ricketts, CL; Schroder, D; Roithova, J; Schwarz, H; Thissen, R; Dutuit, O; (2010) Crossed-Beam Scattering Studies of Electron-Transfer Processes between the Dication CO22+ and Neutral CO2: Electronic States of Reactants and Products Involved. J PHYS CHEM A , 114 (23) 6463 - 6471. 10.1021/jp1023795.

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Abstract

Crossed-beam scattering experiments were carried out at collision energies of 4.51 and 2.71 eV to elucidate the electronic states involved in the nondissociative and dissociative electron-transfer reactions observed following CO22+/CO2 collisions. Specifically, we focus on the observation that, in the dissociative electron-transfer reaction, forming CO+, the majority of the CO+ product ions are formed via electron capture by the CO22+ rather than via ejection of an electron from the neutral CO2 reaction partner. The main channels resulting in nondissociative electron transfer are reactions of the ground (X-3 Sigma(-)(g)) and excited states of CO22+ to give different combinations of the ground and excited states of the product pair of CO2+ ions in which the combination AA appears to be significant. The CO+ ions appear mainly to arise from slow dissociation of CO2+(b(4)Pi(u)) formed following electron capture by the ground state of the dication reactant (X-3 Sigma(-)(g)), with possible contributions from electron capture by higher triplet excited states of the dication.

Type: Article
Title: Crossed-Beam Scattering Studies of Electron-Transfer Processes between the Dication CO22+ and Neutral CO2: Electronic States of Reactants and Products Involved
DOI: 10.1021/jp1023795
Keywords: CHARGE-TRANSFER REACTIONS, MOLECULAR DICATIONS, GAS-PHASE, COLLISION ENERGIES, REACTION DYNAMICS, BOND-FORMATION, SECTION DATA, RARE-GASES, IONS, REACTIVITY
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/1298338
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