Les systèmes fer-oxygène-fluor et fer-soufre-fluor

The action of fluorine and hydrogen fluoride on the oxides and sulfides of iron, as well as that of hydrogen sulfide on iron oxides, has been investigated. In addition, a study has been made of the solid-state reactions between the oxides and fluorides of iron on the one hand and iron fluorides and sulfides on the other. Two oxyfluorides with a rutile- and spinel-type structure have been identified in the iron-oxygen-fluorine system. In contrast, no fluorosulfides have been found. The results have been interpreted on the basis of a comparison between Fe-O, Fe-S and Fe-F bonds.