Chromium(III) perchlorate is an inorganic compound, a salt with the chemical formula Cr(ClO4)3. It has many hydrates, including a hexahydrate Cr(ClO4)3·6H2O and a nonahydrate Cr(ClO4)3·9H2O.Chromium Perchlorate They water-soluble cyan solids.
Preparation Chromium perchlorate can be prepared by reacting chromium(III) oxide or chromium(III) hydroxide with perchloric acid: Cr2O3 + 6HClO4 → 2Cr(ClO4)3 + 3H2O
Reactions Chromium perchlorate reacts with NH3 in suitable conditions to form an orange hexammine complex Cr(ClO4)3·6NH3.Handbook of inorganic substances 2017 – Google Sách. Other compounds with the general formula Cr(ClO4)3(NH3)x are known. When x = 3, the compound is red, when x = 4 or 5, it is orange. The hexammine complex will explode.
It forms complexes with N2H4, such as purple Cr(ClO4)3·2N2H4.
It can also form complexes with urea (CO(NH2)2), such as Cr(ClO4)3·6CO(NH2)2 with a hexagonal structure.
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