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Cobalt(II) chloride is an inorganic compound, a salt of cobalt and chlorine, with the formula CoCl 2.The compound forms several hydrates CoCl 2 ·n H 2 O, for n = 1, 2, 6, and 9. . Claims of the formation of tri- and tetrahydrates have not been confirmed
Anhydrous cobalt(II) chloride is blue, while the hexahydrate is magenta in colour. [1] Because the color change of cobalt(II) chloride in different hydrates, it can be used to manufacture color-changing silica gel. Anhydrous cobalt halides react with nitric oxide at 70~120 °C to generate [Co(NO) 2 X] 2 (X = Cl, Br or I).
Cobalt(III) chloride or cobaltic chloride is an unstable and elusive compound of cobalt and chlorine with formula CoCl 3. In this compound, the cobalt atoms have a formal charge of +3. [1] The compound has been reported to exist in the gas phase at high temperatures, in equilibrium with cobalt(II) chloride and chlorine gas.
The chloride ion in this salt readily undergoes ion exchange. The compound is synthesized by the oxidation of a mixture of cobalt(II) chloride, lithium hydroxide, and ethylenediamine in the presence of carbon dioxide: [1] CoCl 2 + 2 en + CO 2 + 0.5 H 2 O 2 + LiOH → [CoCO 3 (en) 2]Cl + H 2 O + LiCl. The cationic complex is octahedral with C 2 ...
Cobalt chloride (cobalt paper) may refer to: Cobalt(II) chloride (CoCl 2) Cobalt(III) chloride (CoCl 3 This page was last edited on 21 February ...
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Pentaamminenitritocobalt(III) chloride is an inorganic compound with the molecular formula [Co(NH 3) 5 (NO 2)]Cl 2. It is an orange solid that is soluble in water. Although it has no applications, the compound has been of academic interest as a source of the transition metal nitrite complex [Co(NH 3) 5 (NO 2)] 2+.