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所谓哈麦特(Hammett)法则一直是有机化学反应的一个理论性问题.其作用并不亚于著名的伍德沃德——霍夫曼(Woodward-Hoffman)法则.但它还是经验性的,尚未为确切的理论所证实.下式为哈麦特法则:
The so-called Hammett’s rule has always been a theoretical issue of organic chemistry and its role is not inferior to that of the well-known Woodward-Hoffman rule, but it is still empirical and not yet Confirmed by the exact theory, the following formula is the Hamlet law: