Mixed Valence Chemistry-A Survey and Classification
价(化学)
化学
心理学
有机化学
作者
M. B. Robin,Peter Day
出处
期刊:Advances in Inorganic Chemistry and Radiochemistry日期:1968-01-01卷期号:: 247-422被引量:2436
标识
DOI:10.1016/s0065-2792(08)60179-x
摘要
This review is concerned with the neglected class of inorganic compounds, which contain ions of the same element in two different formal states of oxidation. Although the number of references cited in our review show that many individual examples of this class have been studied, yet they have very rarely been treated as a class, and there has never before, to our knowledge, been a systematic attempt to classify their properties in terms of their electronic and molecular structures. In the past, systems containing an element in two different states of oxidation have gone by various names, the terms “mixed valence,” nonintegral valence,” “mixed oxidation,” “oscillating valency,” and “controlled valency” being used interchangeably. Actually, none of these is completely accurate or all-embracing, but in our hope to avoid the introduction of yet another definition, we have somewhat arbitrarily adopted the phrase “mixed valence” for the description of these systems. The concept of resonance among various valence bond structures is one of the cornerstones of modern organic chemistry.