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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 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 2 ·2H 2 O over 64 °C. [3] Ammine complexes like hexaamminenickel chloride also exist. Nickel bromide NiBr 2 is yellow, also crystallising in the cadmium ...
This species has the formula NiCl 2 (H 2 O) 6. Crystallographic analysis reveals that the solid consists of [trans-NiCl 2 (H 2 O) 4] subunits that are hydrogen bonded to each other as well as two additional molecules of H 2 O. Thus one third of the water molecules in the crystal are not directly bonded to Ni 2+, and these might be termed "water ...
At 240 °C the crystal form changes and over 255° the remaining water is lost. Between 330° and 360° the organic components burn and it is destroyed. [20] Cyclopropane carboxylic acid forms two basic salts with nickel, a hydrate Ni 9 (OH) 2 (H 2 O) 6 (C 4 H 5 O 2) 8 • 2H 2 O with density 1.554 Mg/m 3 and an anhydrous form Ni 5 (OH) 2 (C 4 ...
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.
potassium nickel selenate dihydrate [21] K 2 Ni(SeO 4) 2 · 6 H 2 O: potassium nickel selenate Tuttons salt 527.52 monoclinic a b c 104.45 4 2.559 bright green [22] Rb 2 Ni(SeO 4) 2 · 6 H 2 O: rubidium nickel selenate Tuttons salt 619.62 monoclinic a b c 105.20 4 2.856 bright green [22] Cs 2 Ni(SeO 4) 2 · 6 H 2 O: caesium nickel selenate ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
As a dihydrate, nickel formate is a green, odorless, non-flammable solid that is sparingly soluble in water. [2] The compound has a monoclinic crystal structure. [3] The anhydride forms on careful heating at 130–140 °C. [6] When heated in a vacuum to 300 °C, pure nickel is formed: [5] Ni(HCO 2) 2 (H 2 O) 2 → Ni + 2 CO 2 + 2 H 2 O + H 2