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Tungsten dichloride dioxide
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Tungsten dichloride dioxide : ウィキペディア英語版
Tungsten dichloride dioxide

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Tungsten dichloride dioxide is the chemical compound with the formula WO2Cl2. It is a yellow-colored solid. It is used as a precursor to other tungsten compounds. Like other tungsten halides, WO2Cl2 is sensitive to moisture, undergoing hydrolysis.
==Preparation==
WO2Cl2 is prepared by ligand redistribution reaction from tungsten trioxide and tungsten hexachloride:
: 2 WO3 + WCl6 → 3 WO2Cl2
Using a two-zone tube furnace, a vacuum-sealed tube containing these solids is heated to 350 °C. The yellow product sublimes to the cooler end of the reaction tube. No redox occurs in this process. An alternative route highlights the oxophilicity of tungsten:
:WCl6 + 2 O(Si(CH3)3)2 → 3 WO2Cl2 + 4 ClSi(CH3)3
This reaction, like the preceding one, proceeds via the intermediacy of WOCl4.

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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