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

Appearance potentia's have been measured for selected ions from NF2, NF3, N2F2, and N2F4. Ionization-dissociation processes are identified and bond dissociation energies are calculated. In addition, the bond dissociation energy, D(F2N-NF2), has been directly measured to be 5.14±0.38 kj/mole (21.5± 1.6 kcal/mole). A summary is made of available thermochemical and mass spectrometric data for N-F compounds and some evidence is presented to support the designation of cis and trans structures for the N2F2 isomers.