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|Section2= |Section3= }} In chemistry dioxirane is a heterocyclic compound composed of one carbon and two oxygen atoms; it may be thought of as the smallest cyclic organic peroxide. The compound is highly unstable and has never been isolated at room temperature. Compounds containing dioxirane as a functional group, called dioxiranes, often possess better stability and are used in organic synthesis as oxidizing reagents, most notably in the Shi epoxidation reaction. A relatively stable dioxirane in common use is dimethyldioxirane (DMDO) which is derived from acetone. ==Synthesis== Dioxirane is highly unstable and the majority of studies of it have been computational; it has been detected during the low temperature (-196°C) reaction of ethylene and ozone, although even at these temperatures such a mixture can be explosive. Its formation is thought to be radical in nature, preceding via a Criegee intermediate. Microwave analysis has indicated C-H, C-O and O-O bond lengths of 1.090, 1.388 and 1.516 Å respectively.〔 The very long and weak O-O bond (c.f. hydrogen peroxide O-O = 1.47 Å) is the origin of its instability. 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「dioxirane」の詳細全文を読む スポンサード リンク
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