A mass-spectrometric reinvestigation of ionisation and dissociation in CF4 was undertaken to deduce the probable value of the CF3–F bond strength. From studies of the appearance potentials for both positive and negative F and CF3 ions a best value for the bond strength of 143 kcal/mole is deduced. Possible reasons for the abnormal low dielectric strength of CF4 are discussed.
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Bibby et al. (1965) studied this question.
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