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Mass Spectrometric Study of Dissociative Ionization of the SO2F2 Molecule by Monoenergetic Electron Impact, Part II. SF2+, SO2+ and SO+ Ions

✍ Scribed by M. Miletić; O. Nešković; M. Veljković; K. F. Zmbov

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
144 KB
Volume
11
Category
Article
ISSN
0951-4198

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✦ Synopsis

The formation of SF + , SF 2 + , SO + and SO 2 + fragment ions from dissociative ionization of the SO 2 F 2 molecule has been studied by means of a trochoidal electron velocity selector coupled to a mass spectrometer. The ionization efficiency curves of ions were measured and their appearance energies, both in ground and excited states, were determined. The experimental findings were combined with available thermochemical data to determine the following values: ionization energy IE (SF 2 ) = 10.08 eV; Heat of formation, ∆H f (SF 2 + ) = 7.01 eV and bond dissociation energy, D(F 2 S-2O) = 9.94 eV.

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