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Manganese(II) chloride is the dichloride salt of manganese, MnCl 2. This inorganic chemical exists in the anhydrous form, as well as the di hydrate (MnCl 2 ·2H 2 O) and tetrahydrate (MnCl 2 ·4H 2 O), with the tetrahydrate being the most common form.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
In the solid state below 159 °C, manganocene adopts a polymeric structure with every manganese atom coordinated by three cyclopentadienyl ligands, two of which are bridging ligands. Above 159 °C, the solid changes color from amber to pink and the polymer converts to the structure of a normal sandwich complex, i.e., the molecule Mn(η 5-C 5 H ...
Manganese(II) sulfate usually refers to the inorganic compound with the formula MnSO 4 ·H 2 O. This pale pink deliquescent solid is a commercially significant manganese(II) salt. Approximately 260,000 tonnes of manganese(II) sulfate were produced worldwide in 2005. It is the precursor to manganese metal and many other chemical compounds.
245.087 g/mol (tetrahydrate) Appearance white crystals (anhydrous) light pink monoclinic crystals (tetrahydrate) Density: 1.74 g/cm 3 (anhydrous) 1.59 g/cm 3 (tetrahydrate) Melting point: 210 °C (410 °F; 483 K) (anhydrous) 80 °C (tetrahydrate) Solubility: soluble in water (about 700g/L at 20°C for tetrahydrate), methanol, acetic acid ...
A particularly common oxidation state for manganese in aqueous solution is +2, which has a pale pink color. Many manganese(II) compounds are known, such as the aquo complexes derived from manganese(II) sulfate (MnSO 4) and manganese(II) chloride (MnCl 2). This oxidation state is also seen in the mineral rhodochrosite (manganese(II) carbonate ...
Manganese(II) iodide is the chemical compound composed of manganese and iodide with the formula MnI 2 (H2O) n. The tetrahydrate is a pink solid while the anhydrous derivative is beige. [2] Both forms feature octahedral Mn centers. Unlike MnCl 2 (H 2 O) 4 and MnBr 2 (H 2 O) 4 which are cis, MnI 2 (H 2 O) 4 is trans. [3]
In an acidic solution, permanganate(VII) is reduced to the pale pink manganese(II) (Mn 2+) with an oxidation state of +2. 8 H + + MnO − 4 + 5 e − → Mn 2+ + 4 H 2 O. In a strongly basic or alkaline solution, permanganate(VII) is reduced to the green manganate ion, MnO 2− 4 with an oxidation state of +6. MnO − 4 + e − → MnO 2− 4