Why cyclopropylmethyl cation shows extra stability? I was solving a few questions on SN1 reactions and the question asked which of the compound would easily give SN1 reaction (I don't remember the exact question and the options mentioned). The answer was tricyclopropylmethanol. I couldn't figure out why is that so. In the options, there was tertiary alcohol too and i suppose the tertiary alcohol should be the most reactive and should give SN1 reaction, after all reactivity towards SN1 depends on the stability of carbocation formed. Any suggestions are greatly appreciated!