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The yellowish dihydrate, NiCl 2 ·2H 2 O, is produced by heating the hexahydrate between 66 and 133 °C. [6] The hydrates convert to the anhydrous form upon heating in thionyl chloride or by heating under a stream of HCl gas. Simply heating the hydrates does not afford the anhydrous dichloride. NiCl 2 ·6H 2 O + 6 SOCl 2 → NiCl 2 + 6SO 2 + 12HCl
Nickel(II) fluoride NiF 2 is yellow, crystallising in the rutile structure and can form a trihydrate, NiF 2 ·3H 2 O. [3] A tetrahydrate also exists. [4] Nickel chloride NiCl 2 is yellow, crystallising in the cadmium chloride structure. It can form a hexahydrate, NiCl 2 ·6H 2 O, a tetrahydrate NiCl 2 ·4H 2 O over 29 °C and a dihydrate, NiCl ...
Nickel acetate has the formula (CH 3 COO) 2 Ni·4H 2 O. It has monodentate acetate and hydrogen bonding. A dihydrate also exists. Nickel acetate is used to seal anodised aluminium. [1] Nickel formate Ni(HCOO) 2.2 H 2 O decomposes when heated to yield carbon dioxide, carbon monoxide, hydrogen, water and finely divided porous nickel. [2]
Double fluorides include the above-mentioned fluoroanion salts, and those fluoronickelates such as NiF 4 and NiF 6.Other odd ones include an apple green coloured KNiF 3 ·H 2 O and NaNiF 3 ·H 2 O, aluminium nickel pentafluoride AlNiF 5 ·7H 2 O, ceric nickelous decafluoride Ce 2 NiF 10 ·7H 2 O, niobium nickel fluoride Ni 3 H 4 Nb 2 F 20 ·19H 2 O, vanadium nickel pentafluoride VNiF 5 ·7H 2 ...
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]
Dichlorobis(ethylenediamine)nickel(II) is the inorganic compound with the formula NiCl 2 (en) 2, where en = ethylenediamine. The formula is deceptive: the compound is the chloride salt of the coordination complex [Ni 2 Cl 2 (en) 4] 2+. This blue solid is soluble in water and some polar organic solvents.
Today's Wordle Answer for #1300 on Thursday, January 9, 2025. Today's Wordle answer on Thursday, January 9, 2025, is WAFER. How'd you do? Next: Catch up on other Wordle answers from this week.
Mg 2+ colorless Scandium(III) ... MnCl 2 ·4H 2 O pink Copper(II) chloride dihydrate: CuCl 2 ·2H 2 O ... Nickel(II) chloride hexahydrate: NiCl 2 ·6H 2 O green Lead ...