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Polyhalogen ions are a group of polyatomic cations and anions containing halogens only. The ions can be classified into two classes, isopolyhalogen ions which contain one type of halogen only, and heteropolyhalogen ions with more than one type of halogen. ==Introduction== Numerous polyhalogen ions have been found, with their salts isolated in the solid state and structurally characterized. The following tables summarize the species found so far.〔〔 Notes: *()+ can only exist as ()2+ at low temperatures, a charge-transfer complex from O2 to ()+. Free ()+ is only known from its electronic band spectrum obtained in a low-pressure discharge tube.〔 ^The existence of ()+ is possible but still uncertain.〔 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「polyhalogen ions」の詳細全文を読む スポンサード リンク
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