| 烷基黄原酸及其有关化合物的线性自由能关系 |
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| 引用本文： | 石铁生,霍守钦.烷基黄原酸及其有关化合物的线性自由能关系[J].河北大学学报(自然科学版),1986(3). |
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| 作者姓名： | 石铁生 霍守钦 |
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| 作者单位： | 河北大学化学系 研究生
(石铁生)，河北大学化学系 研究生(霍守钦) |
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| 摘 要： | 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。
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Linear Free Energy Relationships between Alkyl Xanthic Acids and Related Compounds |
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| Abstract: | In this paper we have investigated the relationships between thermodynamic Parameters of alky.l xanthic acids and some thermodynamic parameters of some corresponding compounds based on the data in the literature. We have found that there are some linear free energy relationships between RKa of alkyl xanthic acids and the following parameters: the standard electrode potentials, E0- (v) , of alkyl xanthic acids, the corresponding PKa of alkyl alcohols and the stability constants, of some metal ( Zn, Cd ) complexes of alkyl xanthio acids. We have also derived these relationships theoretically. We have explained the deviations from linearity of branched alkyl. compounds on the basis of the effect of steric hindrance |
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