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本文研究了23种氯化芳基汞XC_6H_4HgCl的质谱。结果证明大多数氯化芳基汞的分子离子峰均较强,且各种氯化芳基汞生成碎片离子D([XC_6H_4]~+)均较汞—氯键断裂生成碎片离子E([XC_6H_4Hg]~+)容易,此结果可以看作是汞有机化合物开裂的普遍性规律。 取代基的电性对于碎片离子的稳定性和丰度有明显的影响。就多数间、对位取代基而言,代表取代基对生成离子D速度的影响参数log Z/Z_H与HammettBrown常数σ~+之间有良好的线性关系。邻乙酯基苯基氯化汞与间、对位取代物比较,难于发生McLafferty重排,此与分子内配位有关。
In this paper, the mass spectra of 23 aryl aryl mercury chlorides XC_6H_4HgCl were studied. The results show that most of the aryl chloride mercury chloride molecular ion peaks are strong, and a variety of aryl mercuric chloride generated fragment ions D ([XC_6H_4] ~ +) than the mercury-chlorine bond fragment ions E ([XC_6H_4Hg ] ~ +) Easy, this result can be seen as the general rule of cracking of mercury organic compounds. The electrical properties of the substituents have a significant effect on the stability and abundance of the fragment ions. For most, para substituents, there is a good linear relationship between the parameter log Z / Z_H, which represents the effect of substituent on the rate of ion D, and the HammettBrown constant σ ~ +. O-ethyl phenyl phenyl mercuric chloride and meta, para substitution, difficult to McLafferty rearrangement, intramolecular coordination.