The electronic properties and stereochemistry of mono-nuclear complexes of the copper(II) ion

Publisher Summary 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.

Mixed Valence Chemistry-A Survey and Classification

Chiral Salen Complexes: An Overview to Recoverable and Reusable Homogeneous and Heterogeneous Catalysts

Ligand environment and the structure of schiff base adducts and tetracoordinated metal-chelates

FI catalysts for olefin polymerization--a comprehensive treatment.

Advancement in stereochemical aspects of Schiff base metal complexes

Recent aspects of the stereochemistry of schiff-base-metal complexes

In order to establish the electronic absorption spectra of quadri-co-ordinate, square-planar cobalt(II)-complexes, the absorption spectra of bis(salicylaldehyde)ethylenediiminato- and bis-(salicylaldehyde)propylenediiminato-cobalt(II) in solution have been determined, with the utmost care taken to avoid undesirable oxidation of the complexes. These compounds show characteristic ligand field band, with a comparatively sharp peak in the near-infrared region. Bis(salicylaldehyde)-α-α′-dimethylethylenediiminato- and bis(salicylaldehyde)-α,α′-diphenylethylenediiminato-cobalt(II) have deen prepared, and their spectra examined. These also show characteristic ligand field bands, with a sharp peak in the near-infrared region. Bis(salicylaldoximato)- and bis(salicylaldiminato)-cobalt(II) have been prepared, and their spectra examined. On the basis of the results obtained above, it has been concluded that these two complexes take a quadri-co-ordinate, planar configuration.

Planar Quadri-co-ordinate Complexes of Cobalt(II) with Schiff Bases Derived from Salicylaldehyde

The conformation and interconversion of schiff base complexes of nickel(II) and copper(II)

Red and green forms of nickel(II) complexes of schiff bases obtained from 3-methoxysalicylaldehyde and 4-halogenoanilines

Shoichiro Yamada

Papers

Advancement in stereochemical aspects of Schiff base metal complexes

Recent aspects of the stereochemistry of schiff-base-metal complexes

Planar Quadri-co-ordinate Complexes of Cobalt(II) with Schiff Bases Derived from Salicylaldehyde

The conformation and interconversion of schiff base complexes of nickel(II) and copper(II)

Red and green forms of nickel(II) complexes of schiff bases obtained from 3-methoxysalicylaldehyde and 4-halogenoanilines