Physical Properties
Through neutron diffraction studies at low temperatures, Iron(II) fluoride is antiferromagnetic. Heat capacity was measured over a temperature range 12-300 K. At temperature 78.3 K a thermal anomalie occurred. This thermal anomalie can be explained as Iron(II) fluoride passing from its disordered paramagnetic state to a more ordered antiferromagnetic state.
The vapor species were identified between 965 and 1149 K. Using mass spectrometry the heat of sublimation was experimentally determined and averaged to be 75.56 ± 0.23kcal. mole−1. The following reaction was proposed in order to calculate the atomization energy for Fe+:
- FeF2 + e → Fe+ +F2(or 2F) + 2e
Read more about this topic: Iron(II) Fluoride
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