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Molecular oxohalides (oxyhalides) are a group of chemical compounds in which both oxygen and halogen atoms are attached to another chemical element A in a single molecule. They have the general formula AOmXn, X = F, Cl, Br, I. The element A may be a main group element, a transition element or an actinide. The term oxohalide, or oxyhalide, may also refer to minerals and other crystalline substances with the same overall chemical formula, but having an ionic structure. ==Synthesis== Oxohalides can be seen as compounds intermediate between oxides and halides. There are three general methods of synthesis:〔Synthesis of individual compounds can be found in Housecroft & Sharpe and Greenwood & Earnshaw in sections relating to the specific element, A〕 *Partial oxidation of a halide: 2PCl3 + O2 → 2POCl3. In this example, the oxidation state increases by two and the electrical charge is unchanged. *Partial halogenation of an oxide: 2V2O5 + 6Cl2 + 3C → 4VOCl3 + 3CO2 *Oxide replacement: ()2− + 2Cl− + 4H+ → CrO2Cl2 + 4H2O In addition, various oxohalides can be made by halogen exchange reactions and this reaction can also lead to the formation of mixed oxohalides such as POFCl2 and CrO2FCl. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oxohalide」の詳細全文を読む スポンサード リンク
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