什么是自由基? 什么是自由基?

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自由基 化学上也称为 ‘游离基’ 是指合物的分子在光热等外界条件下,共价键发生均裂而形成的具有不成对电子的原子或基团 (共价键不均匀裂解时,两原子间的共用电子对完全转移到其中的一个原子上,其结果是形成了带正电和负电的离子,这种断裂方式称之为键的异裂)在书写时,一般在原子符号或者原子团符号旁边加上一个 表示没有成对的电子,如氢自由基

H,即氢原子 CI即氯原子 甲基自由基CH3 自由基反应在燃烧 气体化学 聚合反应 等离子体化学 生物化学和其他各种化学学科中扮演很重要的角色,历史上第一个被发现和证实的自由基是由摩西冈伯格在1900年与密歇根大学发现的三苯甲基自由基,中国有机化学家刘有成院士在自由基础化学领域也做出了杰出贡献



  • 浠涔堟槸鑷敱鍩
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