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Chloropentamminecobalt chloride
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Chloropentamminecobalt chloride : ウィキペディア英語版
Chloropentamminecobalt chloride

Chloropentamminecobalt chloride is a cobalt coordination compound. It is a red-violet, diamagnetic, water-soluble salt with the formula ()Cl2. The compound has been of academic and historical interest.
== Synthesis and reactions ==
The complex is prepared with a two-step process starting with oxidizing a solution of cobalt chloride and ammonia.
:2 CoCl2,6H20 + 8 NH3 + 2 NH4Cl + H2O2 → 2 ()Cl3 + 12 H2O
This intermediate is then heated to induce coordination of one of the outer sphere chloride ligands:
:()Cl3 → ()Cl2 + H2O
The complex is a dication with idealized C4v symmetry.
In an aqueous solution, chloropentamminecobalt(III) chloride reforms aquopentammine complex. With concentrated sulfuric acid, chloropentamminecobalt(III) chloride forms the hydrogen sulfate complex.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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