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chloryl
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In chemistry, chloryl refers to a triatomic cation with chemical formula . This species has the same general structure as chlorite (ClO2-) but it is electronically different, with chlorine having a +5 oxidation state (rather than the +3 of chlorite). This makes it a rare example of a positively charged oxychloride. Chloryl compounds, such as and ()(), are all highly reactive and react violently with water and most organic compounds.
==Structure==
The cation is isoelectronic with , and has a bent structure with a bond angle close to 120°. The Cl–O bond is of bond order 1.5, with its Lewis structure consisting of a double bond and a dative bond which does not utilize d-orbitals.
The red color of is caused by electron transitions into an antibonding orbital. The analogous transition in is not in the visible spectrum, so is colorless. The strength of interaction with the counterion affects the energy of this antibonding orbital; thus, in colorless chloryl compounds, strong interactions with the counterion, corresponding with the higher covalent character of the bonding, shift the transition energy out of the visible spectrum.〔
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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