A photoionization mass spectrometer has been used over the wavelength range 650–1100 Å (19.07–11.27 eV) to determine the appearance potentials, heats of formation, and photoionization efficiencies of the following ions: CFCl+2, CCl+3,CFCl+, and CCl+2 from CFCl3; CF2Cl+2, CFCl+2, CF2Cl+, CFCl+, and CF+2 from CF2Cl2; and CF3Cl+, CF3+, and CF+2 from CF3Cl. The parent ion CFCl+3 of CFCl3 was not observed.
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Ajello et al. (1976) studied this question.
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