碳陽離子

The first of the reactive intermediates to be considered is known as a "carbocation". 要研究的第一種活性中間體叫做“正碳離子。”

If there are five or more bonds to a single carbon atoms, it will be short of electrons and have a positive charge - this species is called a carbonium ion, a form of carbocation. 陽碳（碳鎓）：如果有五個甚至更多的鍵連接在一個碳原子上，碳原子由于缺乏電子而帶正電，這種物質(zhì)稱為陽碳（或碳鎓），這是碳正離子的一種。

Reaction of ferrocenylphenylcarbinol with ethereal solution of boron trifluoride in dichloride methane formed the relevant ferrocenylphenylmethyl carbocation. 二茂鐵基苯基甲醇與三氟化硼-乙醚溶液在二氯甲烷中作用,形成二茂鐵苯基甲基碳正離子。

Their result affirm:in all sorts of molecular rearrangement reaction的復(fù)數(shù)）" target="_blank">reactions,anyway tend to produce more stable carbocation,or carboanion,or free radical middle substance and their products. 其結(jié)果證實:在種種分子重排反應(yīng)中,總是趨向于生成結(jié)構(gòu)更穩(wěn)定的碳正離子或碳負離子或自由基中間體及其產(chǎn)物。

Keywords Markovnikov's rule;anti-Markovnikov's rule;electron-effect;reaction mechanism;Carbocation stabilization; 馬氏規(guī)則;反馬氏規(guī)則;電子效應(yīng);反應(yīng)歷程;碳正離子穩(wěn)定性;