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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
The salt is prepared with a two-step process starting with oxidizing a solution of cobalt chloride and ammonia. [1] [2]2 CoCl 2 ·6H 2 O + 10 NH 3 + 2 HCl + H 2 O 2 → 2 [Co(NH 3) 5 (OH 2)]Cl 3 + 12 H 2 O
The C=O distance is 1.18 Å, the C−Cl distance is 1.74 Å and the Cl−C−Cl angle is 111.8°. [10] Phosgene is a carbon oxohalide and it can be considered one of the simplest acyl chlorides, being formally derived from carbonic acid .
Cobalt pentazolide Co(N 5) 2 was discovered in 2017, and it exists in the form of the hydrate [Co(H 2 O) 4 (N 5) 2]·4H 2 O. It decomposes at 50~145 °C to form cobalt(II) azide, becoming anhydrous and releasing nitrogen, and exploding when heated further.
Photochlorination gives the perchloroethylene carbonate C 2 Cl 4 O 2 CO and hydrogen chloride HCl, which is subsequently degraded to oxalyl chloride and phosgene COCl 2: [8] C 2 H 4 O 2 CO + 4 Cl 2 → C 2 Cl 4 O 2 CO + 4 HCl C 2 Cl 4 O 2 CO → C 2 O 2 Cl 2 + COCl 2
cis-Dichlorobis(ethylenediamine)cobalt(III) chloride is a salt with the formula [CoCl 2 (en) 2]Cl (en = ethylenediamine). The salt consists of a cationic coordination complex and a chloride anion. It is a violet diamagnetic solid that is soluble in water.
2 CoCl 2 + Cl 2 ↔ 2 CoCl 3. At 918 K (below the melting point of CoCl 2, 999 K), the trichloride was the predominant cobalt species in the vapor, with partial pressure of 0.72 mm Hg versus 0.62 for the dichloride. However, equilibrium shifts to the left at higher temperatures. At 1073 K, the partial pressures were 7.3 and 31.3 mm Hg ...
Co + H 2 SO 4 + 7 H 2 O → CoSO 4 (H 2 O) 7 + H 2 CoO + H 2 SO 4 + 6 H 2 O → CoSO 4 (H 2 O) 7. The heptahydrate is only stable at humidity >70% at room temperature, otherwise it converts to the hexahydrate. [2] The hexahydrate converts to the monohydrate and the anhydrous forms at 100 and 250 °C, respectively. [1] CoSO 4 (H 2 O) 7 → CoSO ...