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“硬酸、硬碱与软酸、软碱原理”及“酸碱的分类”在本刊“酸碱的电子论和软硬度”一文中已有论述,本文不拟详谈。但从分类表以及 HSAB 原理和 Ahrland 等人的工作来看,还都是实验的归纳总结,不具假说性质,更未上升到理论的高度。对于酸碱之分为软硬两类,显然 Pearson 认为极化率是分类的主要根据。他还把“软度”和某些容易鉴别的物理性质,如电离势、氧化还原电位、极化率定量地联系起来。所有这些工作都给出粗略相同的顺序,但不是很准确的。在鉴别碱的“硬”、“软”性时,他还提出过把 CH_3Hg~+作为典型的软酸,研究反应
“Hard acid, hard and soft acid, soft acid, soft alkali principle” and “acid-base classification” in this article “acid-base theory of electronics and soft hardness,” a paper has been discussed in this article does not intend to elaborate. However, from the classification table and the work of HSAB principle and Ahrland et al., It is also the conclusion of the experiment, which is not hypothetical in nature. It never rose to the theoretical level. For acid and alkali is divided into two types of hard and soft, obviously Pearson that the polarization rate is the main basis for classification. He also quantitatively linked “softness” to certain easily identifiable physical properties such as ionization potential, redox potential, and polarizability. All of these work gives roughly the same order, but not very accurate. In identifying the “hard” and “soft” properties of alkali, he also proposed to use CH_3Hg ~ + as a typical soft acid and study the reaction