Chromium(III) perchlorate
Chromium perchlorate is an inorganic compound, a salt with the chemical formula Cr3. It's hexahydrate Cr3·6H2O is a cyan solid that dissolves in water.
Preparation
Chromium perchlorate can prepared by reacting chromium(III) oxide or chromium(III) hydroxide with perchloric acid:Hydrates
Chromium perchlorate has many hydrates, such as the hexahydrate Cr3·6H2O and a nonahydrate Cr3·9H2O. All of them are cyan substances that are soluble in water.Related compounds
- Cr3 will react with NH3 in suitable conditions to form an orange hexammine complex Cr3·6NH3. Other compounds with the general formula Cr3x are also known. When x = 3, this compound is red, when x = 4 or 5, it is orange. The hexammine complex will explode.
- Cr3 can also form complexes with N2H4, such as purple Cr3·2N2H4.
- Cr3 can also form complexes with urea, such as Cr3·6CO2 with a hexagonal structure.