From an infrared study of gaseous TiF2 and TiF3 species isolated in neon and argon rare-gas matrices values of the symmetric and antisymmetric vibrational frequencies were obtained. Bond-angle measurements for TiF2, made using the isotope shift method, indicated a value of 130° ± 5°. This result has been rationalized in terms of possible electronic configurations for TiF2. Equilibrium constants for the reaction 2TiF3(g)+Ti(s)→3TiF2(g) were measured and combined with calculated free-energy-function data to indicate the stability of TiF2.
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Hastie et al. (1969) studied this question.
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