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本文研究了邻位取代苯基氯化汞o-XC_6H_4HgCl(X=CH_3、H、Cl、Br、COOC_2H_5、NO_2)与HCl(NaI)在85％对氧陆圜水溶液中的质子分解反应,证明反应按S_El历程进行。视取代基不同,反应速度次序如下:CH_3>H>Cl>COOC_2H_5～Br>NO_2。从化学反应与紫外光谱的研究以及理论计算结果表明,p或π电子的邻位取代基对水原子有分子内配位,它对反应速度有重要影响。测定了15种p-、m-、o-取代苯基氯化汞在80％对氧陆圜水溶液中在40.0℃的质子分解反应的速度常数k_1,表明给电性取代基加速反应,吸电性取代基使反应减慢,这可以看作是反应中心在芳环上的芳基汞化合物的S_E1反应所具有的一个特点。
In this paper, the proton decomposition reaction of ortho substituted phenylmercuric chloride o-XC_6H_4HgCl (X = CH_3, H, Cl, Br, COOC_2H_5, NO_2) and HCl (NaI) in 85% According to S_El history. Depending on the substituents, the order of the reaction rates is as follows: CH 3> H> Cl> COOC 2 H 5 -Br> NO 2. From the chemical reaction and ultraviolet spectroscopy and theoretical calculations show that, p or π adjacent substituents on the water atom intramolecular coordination, which has a significant impact on the reaction rate. The rate constants k_1 of the proton dissociation reactions of 15 kinds of p-, m-, o-substituted phenylmercuric chlorides in 80% aqueous solution of Oroxene at 40.0 ℃ were measured, which showed that the charge-accepting substituents accelerated the reaction, The sex substituent slows the reaction, which can be seen as a feature of the S_E1 reaction of arylmercury compounds with aromatic rings on the center of the reaction.