Tetrachloroferrate

Chemical compound

Tetrachloroferrate is the polyatomic ion having chemical formula FeCl−4. The metallate can be formed when ferric chloride abstracts a chloride ion from various other chloride salts. The resulting tetrachloroferrate salts are typically soluble in non-polar solvents. The tetrachloroferrate anion, with iron(III) in the center, has tetrahedral geometry. It is useful as a non-coordinating anion comparable to perchlorate. Several organoammonium salts have been studied for their novel material properties. 1-Butyl-3-methylimidazolium tetrachloroferrate is one of several ionic liquids that are magnetic. Trimethylchloromethylammonium tetrachloroferrate is a plastic crystal that can behave as a molecular switch in response to several different types of inputs.

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