Manganese(II) perchlorate is an inorganic chemical compound with the formula Mn(ClO₄)₂. It forms a white-colored anhydrous and a rose-colored hexahydrate, both of which are

hygroscopic Hygroscopy is the phenomenon of attracting and holding water molecules via either absorption (chemistry), absorption or adsorption from the surrounding Natural environment, environment, which is usually at normal or room temperature. If water mol ...

. As a perchlorate, it is a strong oxidizing agent.

Production and reactions

The hexahydrate can be produced by reacting

manganese Manganese is a chemical element; it has Symbol (chemistry), symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. It is a transition m ...

metal or manganese(II) carbonate with

perchloric acid Perchloric acid is a mineral acid with the formula H Cl O4. It is an oxoacid of chlorine. Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid, nitric acid and hydrochloric acid. It is a powerful oxid ...

, followed by the evaporation of the solution. The hexahydrate does not dehydrate when heating but instead oxidizes to

manganese dioxide Manganese dioxide is the inorganic compound with the formula . This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for is for dry-cel ...

at 150 °C. To produce the anhydrous form,

manganese(II) nitrate Manganese(II) nitrate refers to the inorganic compounds with formula Mn( NO3)2·(H2O)n. These compounds are nitrate salts containing varying amounts of water. A common derivative is the tetrahydrate, Mn(NO3)2·4H2O, but mono- and hexahydrates are ...

is reacted with

dichlorine hexoxide Dichlorine hexoxide is the chemical compound with the molecular formula or , which is correct for its gaseous state. However, in liquid or solid form, this chlorine oxide ionizes into the dark red ionic compound chloryl perchlorate or dioxochlor ...

at 5 °C: :Mn(NO₃)₂ + 4 Cl₂O₆ → NO₂Mn(ClO₄)₃ + NO₂ClO₄ + 4 ClO₂ + O₂ The resulting

nitryl Nitryl is the nitrogen dioxide (NO2) moiety when it occurs in a larger compound as a univalent fragment. Examples include nitryl fluoride (NO2F) and nitryl chloride (NO2Cl). Like nitrogen dioxide, the nitryl moiety contains a nitrogen atom with ...

salt is subsequently heated at 105 °C in a vacuum to produce the anhydrous perchlorate. :NO₂Mn(ClO₄)₃ → Mn(ClO₄)₂ + NO₂ClO₄

Structure

The anhydrous form is predicted to be isostructural with

cobalt(II) perchlorate Cobalt(II) perchlorate is an inorganic chemical compound with the formula Co(ClO4)2·''n''H2O (''n'' = 0,6). The pink anhydrous and red hexahydrate forms are both hygroscopic solids. Preparation and reactions Cobalt(II) perchlorate hexahydrate is ...

, based on the IR spectrum and the Raman spectrum of the compound. The hexahydrate consists of discrete n(H₂O)₆sup>2+ octahedrons and

perchlorate A perchlorate is a chemical compound containing the perchlorate ion, , the conjugate base of perchloric acid (ionic perchlorate). As counterions, there can be metal cations, quaternary ammonium cations or other ions, for example, nitronium cat ...

anions with lattice constants a = 7.85 Å, b = 13.60 Å and c = 5.30 Å. The hexahydrate undergoes phase transitions at low temperatures.

References

{{Perchlorates Manganese(II) compounds Perchlorates