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Nickel sulfate hexahydrate under a microscope. At least seven sulfate salts of nickel(II) are known. These salts differ in terms of their hydration or crystal habit.. The common tetragonal hexahydrate crystallizes from aqueous solution between 30.7 and 53.8 °C.
Nickel(II) sulfate can crystallise with six water molecules yielding Retgersite or with seven making Morenosite which is isomorphic to Epsom salts. These contain the hexaquanickel(II) ion. [ 1 ] There is also an anhydrous form, a dihydrate and a tetrahydrate, the last two crystallised from sulfuric acid.
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 ...
With sodium, the double sulfate is nickelblödite Na 2 Ni ... Potassium nickel(II) gallium phosphate hydrate 558.17 Monoclinic C2/c: 13.209 10.173 8.813 107.68 1128.4
Nickel acetate exists as an intermediate and the final result is that solid nickel, nickel oxide, Ni 3 C and carbon remain. [9] With malonate nickel can form a bis-malonato-nickelate anion, which can form double salts. [10] Nickel maleate can be made from maleic acid and nickel carbonate in boiling water.
Potassium Nickel Sulfate Hexahydrate [14] used as UV filter [48] Rb Ni Rb 2 [Ni(H 2 O) 6](SO 4) 2: Rubidium Nickel Sulfate Hexahydrate 6.221 12.41 9.131 106.055° 677.43 001 surface has step growth of 4.6 Å, optical transmission bands at 250, 500 and 860 nm which are the same as nickel sulfate hexahydrate, but UV band transmits more.
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 ...
CuSO 4 ·5H 2 O – copper(II) sulfate pentahydrate; CoCl 2 ·6H 2 O – cobalt(II) chloride hexahydrate; SnCl 2 ·2H 2 O – tin(II) (or stannous) chloride dihydrate; For many salts, the exact bonding of the water is unimportant because the water molecules are made labile upon dissolution.
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