Mass spectrometric study of NF2, NF3, N2F2, and N2F4

Abstract

(May 22, 196 1) . Appearance potential s have bee n meas ured for selected ions [rom NF2, XF3, X zF" a nd N 2F 4 • I oni zation-di ssociatio n processes a re iden t ified a nd bond di sociation e l1C' rgiC's a rC' calcu lated . In add it ion , t he bond di ssociation energy , D (1i'2N -NF2), has bee n di rectly meas ured to be 5.14 ± O.38 kj / moie (2 1.5 ± l.6 kcal/mole). A summ ary is made of ava il a ble t hermochemical and mass s pectro metric data for N -F compounds and som e evidence is p rese nted to support the des ignation of cis and trans strLI ctures for t he N 2F , iso mers .

Energy Barrier of the cis-trans Isomerization of Difluorodiazine

“…The photodimerization of 2-cyclopentenone in the presence of xanthone (.ETl = 74.2 kcal/mole4), under conditions where xanthone absorbs most of the incident light, proceeds at nearly the same rate as the dimerization performed in the absence of the sensitizer. 5 This result is in accord with the now classic (4) W. G. Herkstroeter, A. A. Lamola, and G. S. Hammond, J.…”

Mass spectrometric study of photoionization. XIV. Nitrogen trifluoride and trifluoramine oxide

“…However, this is very similar to the threshold energy for NF3 and trans-N2F2. 2 The rapidly rising curve shows some evidence for unresolved autoionization structure in the region from onset to about 910 Á and then a relatively constant ion yield to 850 A. The remainder of the curve was not obtained in detail because of the very low signal.…”

Electron Ionization Mass Spectrum of Tellurium Hexafluoride

“…While the initiating species was either too short-lived or unstable to be a signature in the mass spectrum, the nitrogenous oxides all had to be considered as well as the fragmentation pattern of NF 3 itself in the assignment of background components. The mass spectrum of NF 3 and its EI fragmentation have been discussed. , …”

“…The mass spectrum of NF 3 and its EI fragmentation have been discussed. 46,47 Successful acquisition of the Raman spectrum of TeF 6 solid was accomplished by condensing the off-gas from the reaction of approximately 160 mg of Te metal with NF 3 , which produced sufficient material to avoid the previously described difficulties. Further, the Raman spectrum was acquired immediately to keep signal components of the side reactions to a minimum.…”