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本文根据文献报导的数据,对烷基黄原酸的热力学参数及其对应的几种化合物的若干热力学参数间的关系作了考察,发现烷基黄原酸的PK_a值与下列各参数存在着线性自由能关系:烷基黄原酸本身的标准电极电位E~0(v);烷基黄原酸所对应烷基醇的PK_a值和烷基黄原酸的Zn,C_d络合物的稳定常数。并且从理论上推导了这些关系。支链烷基各常数偏离直线关系,用空间位阻效应作了解释。
Based on the data reported in the literature, the relationship between the thermodynamic parameters of alkyl xanthic acids and several thermodynamic parameters of several corresponding compounds was investigated. It was found that there is a linear relationship between the PK_a values of alkyl xanthogenates and the following parameters Free energy relationship: alkyl xanthic acid standard electrode potential E ~ 0 (v); alkyl xanthate corresponding alkyl alcohol PK_a value and alkyl xanthic acid Zn, C_d complex stability constants . And theoretically derived these relations. Branched alkyl various constants deviate from the linear relationship, with the steric effect explained.