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Guided ion–beam studies of the ground-state O+2 (2Πg, v=0) reaction with CH4: Effect of internal versus translational energy (1991)

Fisher, Ellen R. ; Armentrout, P. B.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 94 (1991), S. 1150-1157

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: Guided ion-beam mass spectrometry is used to study the reactions of methane with O+2 in its ground electronic and vibrational state. In addition to the three previously reported reaction products, CH2OOH+, CH+3 , and CH+4 , we also observe three other products, CH2O+2 , H3O+, and CO+2 . Reactions of excited O+2 ions are also examined and are shown to be more efficient than those for ground-state ions. The thermochemistry and potential-energy surfaces for this reaction are discussed as well as the effects of vibrational, electronic, and translational energy on the reaction system. A heat of formation for CH2O+2 of 201.5±1.6 kcal/mol is measured and tentatively assigned to the methyne hydroperoxy ion structure, HC–O–OH+.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.460021

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