文档介绍：2021高中化学竞赛初赛模拟试卷〔26〕
第第题〔11分〕
1．uSat是烯烃并且只含有一个双键，uSat是1－***环己烯；
2．Step1是速率决定步骤，因为其ΔG‡最大，ΔG‡表示free energy of activation thermodynamically favorable. Therefore, hydrogen can be ruled out in composition from all of the products.
It is clear from the structural analysis that all of the characterized products of the discharging reaction are aromatic compounds. Their structural stability is also demonstrated by the EI mass spectra showing predominant signal intensity of the molecular ions. Under electron bombardment, these molecular ions lose chlorine atoms one by one with carbon frameworks kept unchanged. Another interesting structural feature is that rings of the product compounds tend to pack together rather than forming a relatively simple polycyclic structure like that in anthracene. In particular, the occurrence of five-membered-ring is noteworthy as it is essential for the formation of C60 and other fullerenes. In fact, all of the characterized products in the present work can be considered as the perchlorinated intermediates in forming C60. Therefore, the significance of the reaction is not limited to the synthesis
of the decachlorocorannulene and other perchlorinated products; it is also helpful to the understanding of the formation mechanism of fullerenes.
Although the reagent of the experiment, chloroform molecules, contain a single carbon atom only, in the discharging reaction, they serve as C1 building block, which aggregate to structures that are parts of the fullerene framework. Hence, the extension of the discharging reaction from the gas phase into the liquid media allows the synthesis of interesting and novel compounds. The experimental results reported in this paper has demonstrated the potential ability of the technique.
意义：
①此方法可以作为全***代烃等一系列奇异物质的一个合成方法。
②富勒烯全***代产物可以看作是60个二***卡宾的聚集〔aggregate〕产物。
3．M为HCl与Cl2的混合气体。
4．︰CCl2的产生是热力学有利的，说明氢元素是在热力学上不倾向于在有机产物中存在，而是以HCl〔g, ΔS＞0〕作为产物。ΔH2＜ΔH1
CHCl3＝HCl(g)＋︰CCl2 More favorable ΔH1＞0
CHCl3＝Cl2(g)＋︰CH