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Molar mass: 154.75 g/mol (anhydrous) ... (II) sulfate, or just nickel sulfate, ... In a 2-year study with daily oral administration of nickel sulfate hexahydrate to ...
nickel(II) sulfite hexahydrate hexagonal 8.794 9.002 603 2.04 emerald green [4] [23] NiSO 3 · 3 H 2 O: nickel(II) sulfite trihydrate light green [24] NiSO 3 •3N 2 H 4 · H 2 O: nickel(II) sulfite trihydrazine hydrate rose [5] NiSO 3 •2N 2 H 4 · H 2 O: nickel(II) sulfite dihydrazine hydrate blue [5] NiS 2 O 3 •6H 2 O Nickel(II ...
Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl 2. The anhydrous salt is yellow, but the more familiar hydrate NiCl 2 ·6H 2 O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. The nickel chlorides are deliquescent, absorbing moisture from the air to form ...
With four bromide atoms nickel(II) forms a series of salts called tetrabromonickelates. Nickel iodide NiI 2 is black, also crystallising in the cadmium chloride structure. It can form a green hexahydrate, NiI 2 ·6H 2 O. [3] Nickel iodide has a brown diammine NiI 2 •2NH 3 and a bluish-violet hexammine NiI 2 •6NH 3. [3] Nickel(III) fluoride ...
Other double trichlorides include potassium nickel trichloride KNiCl 3 ·5H 2 O, [62] yellow cesium nickel trichloride CsNiCl 3, [62] lithium nickel trichloride LiNiCl 3 ·3H 2 O, [62] hyrdrazinium nickel tetrachloride, [62] and nickel ammonium chloride hexahydrate NH 4 NiCl 3 ·6H 2 O. [63] The tetrachloronickelates contain a tetrahedral NiCl ...
Nickel(II) bromide is the name for the inorganic compounds with the chemical formula NiBr 2 (H 2 O) x. The value of x can be 0 for the anhydrous material, as well as 2, 3, or 6 for the three known hydrate forms. The anhydrous material is a yellow-brown solid which dissolves in water to give blue-green hexahydrate (see picture).
The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid: . NiCO 3 + 2 CH 3 CO 2 H + 3 H 2 O → Ni(CH 3 CO 2) 2 ·4 H 2 O + CO 2. The mint-green tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central nickel centre being coordinated by four water molecules and two acetate ligands. [5]
Nickel(II) sulfate is produced in large amounts by dissolving nickel metal or oxides in sulfuric acid, forming both a hexa- and heptahydrate [46] useful for electroplating nickel. Common salts of nickel, such as chloride, nitrate, and sulfate, dissolve in water to give green solutions of the metal aquo complex [Ni(H 2 O) 6 ] 2+ .