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|Section2=〕 | MeltingPtC = −77.9 | BoilingPtC = 56 | Solubility = miscible | VaporPressure = 160 mmHg (20° C)〔 }} |Section3= |Section8= }} Aziridines are organic compounds containing the aziridine functional group, a three-membered heterocycle with one amine group (-NH-) and two methylene bridges (--).〔''Epoxides and aziridines – A mini review'' Albert Padwaa and S. Shaun Murphreeb Arkivoc (JC-1522R) pp. 6–33 (Online article )〕 The parent compound is aziridine (or ethylene imine), with molecular formula . == Structure == The bond angles in aziridine are approximately 60°, considerably less than the normal hydrocarbon bond angle of 109.5°, which results in angle strain as in the comparable cyclopropane and ethylene oxide molecules. A banana bond model explains bonding in such compounds. Aziridine is less basic than acyclic aliphatic amines, with a pKa of 7.9 for the conjugate acid, due to increased s character of the nitrogen free electron pair. Angle strain in aziridine also increases the barrier to nitrogen inversion. This barrier height permits the isolation of separate ''invertomers'', for example the ''cis'' and ''trans'' invertomers of ''N''-chloro-2-methylaziridine. == Synthesis == There are several syntheses of aziridines (aziridination). 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「aziridine」の詳細全文を読む スポンサード リンク
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