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Mass Spectrometric Study of the Dissociative Ionization of Sulphuryl Fluoride by Monoenergetic Electron Impact. Part I. Heteronuclear Fragment Ions
Author(s) -
Miletić M.,
Nešković O.,
Veljković M.,
Zmbov K. F.
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(199612)10:15<1961::aid-rcm782>3.0.co;2-l
Subject(s) - chemistry , heteronuclear molecule , electron ionization , ion , fluoride , ionization , analytical chemistry (journal) , chromatography , molecule , inorganic chemistry , organic chemistry
The dissociative ionization of sulphuryl fluoride (SO 2 F 2 ) under electron impact has been examined by using a trochoidal electron velocity selector and a magnetic sector mass spectrometer. The ionization efficiency curves of SO 2 F + 2 , SOF + 2 , SO 2 F +and SOF +have been recorded and the appearance energies of different electronic states of these ions were determined. The results were used to evaluate the dissociation energy D(OSF 2 –O)=5.32 eV, enthalpies of formation Δ H f (SO 2 F)=−427.5 kJ/mol (−4.43 eV), Δ H f (SO 2 F + )=616 kJ/mol (6.39 eV), Δ H f (SOF)=−207.5 kJ/mol (−2.15 eV), Δ H f (SOF + )=710 kJ/mol (7.36 eV) and the ionization energies IE(SO 2 F) =10.82 eV and IE(SOF)=9.51 eV.